A.K.W.N Archives - Page 2 of 17 - Knowledge Weighs Nothing

The US Election: One Important Thing You Should Know Right Now — 2 Min Read

September 16, 2020

With the coronavirus pandemic and the US Election, there is a lot to be stressed and concerned about. There is so much information and disinformation, it is becoming increasingly difficult for individuals to make informed decisions. I don’t wish to add too much to the information overload, but there is an issue relating to the US election that I feel is vitally important for people to know about, and factor in with their decision making.

Facebook Political Microtargeting

There are over 190 million active US Facebook accounts. Both political parties and their supporter groups (and possibly hacking groups) pay millions of dollars to display political ads on Facebook. Many of these political Facebook ads are specifically targeted and tailored for you. This is known as microtargeting. The political ads you are seeing on Facebook are not the same, generic ads everyone is seeing, like on the TV, they are just for you.

You might be being specifically targeted due to your online history and Facebook data – the years of posts you have read/liked/shared/commented on, and the people and organisations you follow (or have unfollowed) on Facebook. You can read more on microtargeting here and more about social media use in politics here.

Now if you are a 100% diehard Republican or Democrat, you will likely see less targetted ads, as what’s the point, they already have your vote. The people targetted the most are those undecided, on-the-fence voters. If you are undecided, but your Facebook data suggested you can possibly be swayed one way or another, you will likely be targeted with some highly effective, highly biased advertising designed to sway you.

This Is A Problem…

I have two main issues with this Facebook microtargeting – firstly, most people are unaware that they are being lead-down-the-path via these individualised, highly biased advertising campaigns that are cleverly designed to sway them to vote one way or another. Secondly, these microtargeted ad campaigns don’t even have to be truthful or factual. They can, in effect be lies. You may be seeing ads which are highly biased stating outright lies, day after day… Facebook ads are not fact-checked by Facebook.

The bottom line is – don’t be swayed by the political Facebook ads you are seeing. They are not fact-checked. They are highly biased and cleverly designed to push you to vote one way or another. You are basically being cleverly deceived. Most people don’t know this.

If you are interested in seeing some of the different ads that are used to target people on Facebook, check out the ProPublica Facebook Political Ad Collector where they compile a user-submitted database of the political ads currently doing the rounds on Facebook. Seeing all the different ads that are being shown to different people is eye-opening, to say the least.

UPDATE – New Sources

Almost all news sources have some political bias. If you always read the same news websites or newspapers, it is easy to get caught up with their biased reporting and mistake their political opinion as fact. Even if you use a news aggregator such as Google News it can be biased even though it includes all news sources. Google News was recently found to slightly favour leftish news reporting.

There is a great website called allsides.com where they attempt to provide a balanced 360 view of the news by including news from left, center and right news sources. No matter whether you consider yourself left – center or right, it is great to be able to view the news issues from all angles. It is really interesting to see how different news sources report the same issues, but with different biases. Check out the allsides.com US Election portal here.

A final note for the 2020 US Election – however you do it, postal or in person, please be sure to vote!

Homemade Bushcraft/Frontier Knife Made From A File/Rasp — No Forge Required – Simple Tools Only

July 2, 2020

Mora Knives aside, it can be difficult to find an affordable, quality bushcraft type survival knife. Mora knives are very cheap and very highly regarded, but they are not full-tang knives, which means the blade steel does not travel through to the end of the handle. A full-tang knife is always preferable as it is much stronger, and even if the handle breaks, the remaining steel shaft can be wound with paracord or replaced. If the knife is not full-tang and the handle breaks, the knife is all but useless.

So what’s the answer? Well, you can try your luck with cheap full-tang knives, or you can easily make your own bespoke full-tang bushcraft knife from a metal file. The excellent video tutorial below from Outdoor Boys YouTube channel (I highly recommend subscribing! They put out some amazing video tutorials) shows how to make a homemade full-tang, high-quality knife from an old file/rasp. The best thing about this knife making tutorial is the minimum tools/equipment required — literally all you need is a bench vice, a hand grinder, a drill, and a belt-sander. You can even do away with the belt-sander if you don’t have one! There are a couple of clamps used to fit the handle, but at a push, you could easily just use the bench vice for this.

Tools aside, the other great thing about this knife/tutorial is that you do not need a forge to make this knife! That’s right, no forge, you heard me right. If you do a bit of DIY, you likely have everything you need already! This would make an awesome weekend project, check out the tutorial below. The tutorial also covers making the sheath.

One thing that came to mind when watching this tutorial – you could easily skip making the beautiful, but the time-consuming wood handle. Instead, you could make a simple paracord-wrap handle. This would save time and also allow you to always carry a length of paracord with you.

The Ultimate Tomato Growing Post — A Round-Up Of Experts’ Growing Tips

May 21, 2020

This post is a round-up of smaller posts that were previously featured on Knowledge Weighs Nothing. (I am slowly going back through KWN and tidying things up and removing lots of old/dead posts etc). I have compiled several older tomato growing/preserving posts here in one place to make it simpler to find these excellent tomato growing and preserving tips and tricks. Take your tomato growing to the next level!

DIY Self Watering Alaska Grow Buckets

The Alaska Grow Bucket is the easiest self-watering container system that anyone can use to grow their own food. Alaska Grow Buckets use capillary action of a soil-less grow-medium to draw water from below up to the plant roots. The good thing about this design is there is no pumps, no electricity and best of all, you grow your own food. Become more self-reliant and build one this summer. Find out more here.

How To Grow 50-80 lbs Of Tomatoes Per Plant

That’s right – 50 – 80 pounds of tomatoes PER PLANT! That’s amazing, you could grow a huge amount of tomatoes in a really small space. This is useful for everyone regardless of how much space they have for growing food, but it is especially useful for people with limited growing space. Watch the video above and see how it’s done.

One Man’s Genius Idea For Growing A Huge Tomato Crop

James over at hometalk.com has come up with an awesome way of growing bumper crops of tomatoes with very little effort. James came up with an innovative way to water and feed the tomatoes using a garbage bin. Not only does it result in huge tomato crops, but it is also a much easier way to grow tomatoes as you only have to water them every 2-3 days.

You could use this method to grow tomatoes outdoors or in a greenhouse (if you plant into the ground in your greenhouse). This method is genius in its simplicity, so head over to Home Talk on the link below and find out more… You could probably grow cucumbers and peppers using the same method too! Read James’s post here.

Combat Tomato Blight With Copper Coins

I refuse to use pesticide, insecticide and anti-fungal spray on my fruit and vegetables. If I want to eat foods containing these, I’ll just get them from the supermarket…

The problem is – my reluctance to use chemicals has cost me my entire tomato crop for the last two years! I also lost most of my potatoes last year as well. I lost both crops due to blight. Most people don’t realize, but potato blight and tomato blight are exactly the same. The blight is the same fungus called: Phytophthora infestans.

Many people think that the coin/blight trick is a myth; I can tell you it is not. It works, but only if you use coins produced before 1982 as these have more copper in them and it is the copper that stops the blight. The copper/coin tip might not completely stop the blight, but it may slow it down long enough for your affected tomatoes to ripen. Read the post in full here.

Homemade Monster Tomato Fertilizer Recipe

Do you want to use natural fertilizer on your plants and vegetables? I know I do. I found a great article showing you the recipe for “monster tomato fertilizer” I know I will be trying this. It’s really simple to make and all-natural.I’m thinking about using this recipe on my flowers too, see if I can win any competitions. Find out more here.

How To Correctly Plant Tomato Plants To Get 8 Foot Plants

I think it is fair to say that if you garden and grow your own food, you grow tomatoes. Problem is – if you’re like me, your tomatoes don’t always do as well as expected. Some years we have amazing crops of tomatoes and don’t know what to do with them all but last year, for example, we got hit badly by tomato/potato blight and we lost 90% of our crop.

Now whilst there isn’t a great deal you can do if it is a bad year for blight, there are things you can do when planting your tomato plants which will all but guarantee huge healthy plants with an abundance of fruit. Also, if you follow this method of planting, your tomato plants will be so much stronger and healthier, they may be able to resist the tomato blight fungus that little bit longer that could enable you to harvest the crop before it fails. Check out this link for this awesome tomato planting tutorial from ‘Love Apple Farms’.

How To Build The Ultimate Tomato Or Pepper Cage For Under $2….The Stake-A-Cage

The support of a 4′ long wooden stake – attached to an open-faced wire mesh grid. Strong and durable and cheap! It combines the durability of staking tomatoes with the ease of a cage.

Better yet, by keeping the wire grid flat and not making a true cage – you can tie your tomatoes easily to the grid – and when it comes time to pick – you won’t have to reach through the cages to get to the goods. Click here to see the full article and see how you can make your own ” Stake A Cage”

Very Quick & Easy Way To Make Homemade Sun-Dried Tomatoes

Sun-dried tomatoes are delicious and they really do bring dishes and snacks alive. I am sure more of us would eat more sun-dried tomatoes if it wasn’t for the fact they cost a fortune at the store. Sure, some of you live in climates where you can actually sundry your tomatoes outdoors in the traditional way, but this method takes quite a bit of effort and takes days to completely dry out the tomatoes.

There is an easier way! You can make sun-dried tomatoes in a food dehydrator or an oven. Wait I hear several people shouting that these aren’t sun-dried tomatoes… Interestingly around 90% of sun-dried tomatoes from the store are not actually dried in the sun! I guarantee you that if you follow this tutorial, you’ll end up with the most delicious sun-dried tomatoes you have ever tried, AND you’ll save an absolute fortune over buying them from the store.

Dehydrating Tomatoes 101

Dehydrated tomatoes taste amazing! The problem is when you grow your own tomatoes the year usually goes like this – nothing, nothing, nothing and then loads of tomatoes in one go!

Tomatoes are so healthy, tasty and versatile it is a crime to ever waste them. Sure you can make sauces etc but I think one of the best ways to preserve tomatoes is to dehydrate them. If you don’t have a dehydrator because you think they are too expensive, then get one of these at just $35. For the price it has amazing reviews…

Here is an awesome tutorial on how to dehydrate tomatoes from Bev Cooks, check it out and the next time you have a glut of tomatoes or they are on offer at the store, get dehydrating!

(Original Images –Bev Cooks, Wikipedia, Love Apple Farms, Muffet, TheWalden Effect, Home Talk, LDSPrepper, oldworldgardenfarms.com, chateau-listeur.blogspot.ca)

If You Can’t Buy Hand Sanitizer? You Can Make Your Own…

March 5, 2020

If you haven’t already stocked up on hand sanitizer, you are likely too late. People have been panic buying hand sanitizer ever since coronavirus started making headlines. Most stores sold out ages ago. Some stores that still have hand sanitizer in stock are selling at 10x the list price.

Not to worry, though. It is cheap and easy to make your own hand sanitizer at home. Any hand sanitizer with a total alcohol content of 60% or above is considered effective. See here for CDC advice on handwashing and hand sanitizers.

Note — If you CAN buy regular hand sanitizer, it is probably best to buy and use this in the first instance as it is made for the purpose and it does what it’s supposed to. Homemade hand sanitizer may not be as effective due to human error measuring ingredients etc.

If you are looking for regular soap/hand wash, but it’s also sold out in the shops, check out our dish soap DIY foaming hand wash post. Also, be sure to check out our – how to make homemade germ and virus-killing disinfectant spray and homemade disinfectant wipe posts.

You only require two ingredients to make an effective hand sanitizer – rubbing alcohol and aloe vera gel. At the time of writing, you can still purchase both rubbing alcohol and aloe vera on Amazon

Basic DIY Hand Sanitizer Recipe

2/3 cup Rubbing Alcohol (90-99% alcohol)
1/4 cup Aloe Vera Gel

Many homemade hand sanitizer recipes suggest a ratio of 2/3 cup t0 1/3 cup ratio alcohol to aloe vera. Using 90% rubbing alcohol and this ratio would result in a hand sanitizer with 60% alcohol. To be extra safe I suggest 2/3 cup rubbing alcohol to 1/4 cup of aloe vera to ensure a higher alcohol content.

Add the rubbing alcohol and aloe vera to a bowl and mix them together. Be sure the mixture is thoroughly mixed. Once mixed, decant into some small plastic bottles that you can carry with you.

Use liberally and keep rubbing the sanitizer around your hands until it has entirely dried.

The hand sanitizer we buy often has added emollients and moisturisers to counteract the drying effect of the alcohol. This basic recipe does not. With this in mind, I highly recommend using a hand moisturising cream daily when using this DIY hand sanitizer.

Watch the video below for more advice. It also shows how to make this simple hand sanitizer.

How To Make Your Own Disinfectant Wipes — Quick, Easy & Cheap!

April 30, 2020

Since it has become difficult to buy disinfectant spray and disinfectant wipes in some countries many people are looking online for homemade disinfectant solutions. The problem is many websites and blogs are touting a whole range of homemade, natural, alternative and holistic disinfectant recipes that are simply ineffective. This is bad enough during normal times but during this coronavirus pandemic, it is dangerous.

To be clear – as far as coronavirus is concerned, I would not be relying upon any disinfectant recipes that rely on essential oils (including tea tree), vinegar, lemon juice, vodka, bicarbonate of soda or witch hazel as the main germ/virus killing agent. Stick with bleach, hydrogen peroxide or alcohol, at the correct mixing ratios recommended for killing germs and viruses.

From my own research on the CDC website (see here, here and here), I have found the following products and ratios to be effective for killing germs and viruses, including coronavirus.

Bleach — a bleach solution with bleach to water ratio of 1:10 will kill all germs and virus within ten minutes. The CDC state that a ratio 1:48 is effective for coronavirus (4 teaspoons per quart) so using a 1:10 ratio is more than adequate.
Hydrogen peroxide — 3% hydrogen peroxide – will kill germs and viruses within ten minutes. The CDC state that commercially available 3% hydrogen peroxide is a stable and effective disinfectant when used on inanimate surfaces.
Alcohol — alcohol solutions with at least 70% alcohol – will kill germs and viruses within a minute. The CDC state that 70% alcohol is effective for disinfecting and sanitizing.

Check out my two previous posts: How To Make A Disinfectant Spray From Bleach and How To Make Your Own Hand Emergency Sanitizer

Simple Homemade Disposable Disinfectant Wipes

You will need

Kitchen towel/paper towel (try not to use cheap/thin kitchen towel as it will tear easily). To make more durable wipes, try using Jay cloths or other similar semi-disposable cleaning cloths. These could also possibly be cleaned and reused.
Bleach
Water
Kitchen gloves/rubber gloves
Mixing jug
Baking tray or similar flat-bottomed container
A Ziploc or sealable bag

Method

When bleach is diluted with water it starts to break down after 48 hours or so. With this in mind, I recommend making a small batch of disinfectant wipes every few days.

Take the kitchen towel and carefully tear off 20-30 sheets. Stack them tidily one on top of the other in a stack. Place the stack of paper towel in the baking tray.
Put on your kitchen gloves.
Mix some bleach/water solution at 1:10 ratio in the mixing jug. Around 100ml of water and 10ml of bleach should be sufficient depending on the size/quantity of paper towel.
Carefully pour some of the mixed bleach solution over the stack of paper towels (in the baking tray!). You just want enough solution to saturate the paper towel completely, nothing more.
Leave to sit for a few minutes to be sure the paper towel is fully saturated.
Now place your hand on top of the stack of paper towel and gently press down to squeeze out excess bleach solution into the baking tray. This bit is down to your own judgement. You don’t want the paper towel wipes to be dripping wet, but they obviously need to be wet enough to wipe down surfaces. You can fine-tune this over your first few batches until you find the consistency/moisture level that works best for you.
Carefully place your new disinfectant wipes in a Ziploc or similar sealable bag. Keep sealed and use as necessary and dispose of in the bin.

Note — you could also adapt this to use 3% hydrogen peroxide instead of bleach. Hydrogen peroxide breaks down when exposed to light so you will need to store your wipes in a dark-coloured or opaque airtight container.

It’s recommended that you wear kitchen gloves when using these wipes as they are bleach-based. At the very least make sure you rinse your hands after using them…

Grow Over 300 lbs Potatoes WITHOUT Digging, Watering Or Any Real Effort…

April 23, 2020

No matter whether you grow some vegetables in your back garden as a hobby or you grow vegetables on a larger-scale on your homestead, you will almost definitely grow some potatoes…

Growing potatoes in your garden on a small-scale is simple enough and fun. However, if you harbour any aims of being more self-sufficient you need to grow potatoes on a much larger scale and this can quickly become a whole load of effort and hard work. First, you must dig and prepare the soil and then plant all the seed potatoes, all of which is back-breaking work if you are planting lots of potatoes. This is only half of the work though… When the potatoes are ready, you have to then dig them all up!!!

Thankfully, there is an easier way. Much, much easier… And the news gets even better as the good folks at Back To Reality have created an excellent video detailing how to this. I have included the video down below, so give it a watch.

They managed to grow over 300 lbs of potatoes with minimum effort. No digging/planting, no watering, and no digging/harvesting. All that is required is some hay. Tip –– you can often get hold of old or spoilt hay from local farmers for zero charges. They will likely just be happy for you to take it away. Additionally, if you ask and you are lucky, they might also be happy to provide a ready supply of manure or soiled animal bedding as well.

My recommendation – if you are not convinced by this method of growing potatoes — set aside an area to try it out this year. Grow your main crop of potatoes in the usual manner but try this no-dig, hay method on a smaller test crop. The results should speak for themselves.

BTW – after you have watched the video below, I highly recommend subscribing to Back to Reality’s YouTube channel. They produce some great homesteading, gardening and DIY videos.

How To Make A ‘Doctor Approved’ Reusable Face Mask — No Sewing Required!

May 18, 2020

Firstly a disclaimer of sorts… Simple cloth face masks like the ones featured here are NOT worn to protect you from catching coronavirus. They are worn to help protect others from being infected by you when you are in close proximity.

This is important with coronavirus for two reasons. Firstly, coronavirus can infect others for several days before you begin to experience any symptoms. Secondly, many people who catch coronavirus are asymptomatic. This means they get the virus and are capable of infecting others, but they experience no symptoms themselves. These two points are precisely why coronavirus is so successful at spreading and infecting lots of people…

These cloth face masks work by covering your mouth and nose and catching and reducing the number of droplets you cough, sneeze and breathe out. This reduces the number of virus particles emitted. This has two benefits — fewer emitted virus particles means there’s less chance of passing on the infection to those around you. Also, even if you do pass on the infection, their viral load (the amount of virus passed on) will likely be lower, which could mean the infected person gets a milder illness.

If lots of people wear simple face coverings (buffs and scarfs etc) or cloth masks when in towns and cities and crowded and confined places such as public transport, shops and places of work, this can dramatically reduce the spread of coronavirus in those places.

Note — The only way to completely protect yourself with a mask is if you wear a properly fitted medical, respirator style mask. Even then great care is required when putting on and taking it off to avoid infecting yourself with your hands or surfaces etc.

How To Make N0 Sew Reusable Face Masks

You can purchase simple, reusable face masks on Amazon and eBay etc, but to be honest, they are very simple to make out of an old t-shirt and then they don’t cost a penny either. Watch the videos below to see how it’s done.

The first video is by Dr Cellini. Dr Cellini is a senior diagnostic & interventional radiology doctor and he has a very popular YouTube channel. He has seen various styles of homemade face masks, but he recommends this particular DIY face mask. In this video, Dr Cellini makes his own face mask whilst following another tutorial from Jan Howell. I have also included Jan’s original video tutorial down below, in case you would rather just follow that tutorial instead.

(Main image from Dr Cellini)

How To Make Foaming Hand Wash With Dish Soap

March 30, 2020

It’s the end of March 2020 and most of us are stuck at home trying to slow down the spread of coronavirus. Regardless of the country we live in, we are all getting the same basic information and instructions – stay at home – social distancing – frequent hand washing – disinfect common points of contact in the home (door handles, taps, countertops etc).

The problem with the frequent hand washing is that due to panic buying, most stores have been sold out of soap and liquid hand soap for weeks now… You can still buy dish soap (washing up liquid) in most stores though. You could obviously use a squeeze of dish soap to wash your hands in a pinch, but neat dish soap is very strong. Using it more than a few times is likely to dry out and make your hands very sore.

The good news is — you can make a simple foaming hand wash from diluted dish soap! It is probably not the best thing to be washing your hands with longterm, but if you cannot get any soap or liquid hand wash, it’s a good alternative in the short-term.

**If you need a hand sanitizer for when you are out of the home (work or grocery shopping etc), check out our simple DIY hand sanitizer post.**

How To Make Foaming Hand Wash From Dish Soap

You will need an empty foaming hand wash dispenser. Either rinse out an old one or you can purchase foaming pump dispensers from Amazon.
Some dish soap (washing up liquid)

Instructions

Pour some dish soap into the foaming hand wash dispenser. The amount will vary depending on the size of the dispenser. Usually, around 10% will be about right.
Top up with water so that’s approx 90% water and 10% dish soap.
Screw the pump top on and shake to mix the water and dish soap.
Once mixed depress several times until the foam soap starts to come out.

Note: depending on the size of hand wash dispenser and the dish soap you use, you may need to slightly alter the dish soap to water ratio to get the best foam.

**If you are also struggling to find spray disinfectant in the shops — check out our post on how to make spray disinfectant from household bleach.**

How To Make A Disinfectant Spray & Antiseptic Wash From Bleach

September 29, 2016

Used mainly to clean and disinfect toilets and sinks, basic household chlorine bleach is very cheap, easy to obtain and it kills almost all known germs and most viruses, including coronavirus. Basic household bleach (not perfumed or thick bleach etc) can be diluted and used to make a powerful spray/surface disinfectant. It can also be used to make an antiseptic wound wash known as Dakin’s Solution. Below you will find the widely used ratios and ingredients for both solutions.

We have also done a how to make germ and virus-killing homemade disinfectant wipes post. Additionally, if you are looking for hand wash or hand sanitizer, but they also sold out in the shops, check out our simple DIY hand sanitizer post and our dish soap DIY foaming hand wash post.

How To Make A Disinfectant Bleach Solution

Safety

Bleach emits toxic fumes. Mix the solution outdoors or in a well-ventilated space.
Never mix bleach with ammonia, alcohol, vinegar or other acids as doing this can create toxic gases that can be fatal.
Wear rubber gloves and avoid getting bleach on your skin or clothes.

Bleach Disinfectant Recipe

Clorox or similar household bleach (Sodium hypochlorite solution 5.25%). Don’t use thick or scented bleach.
Tap water
A mixing/measuring jug
An old thoroughly rinsed out plastic spray bottle

How To Make Bleach Disinfectant Spray

The bleach to water ratio is 1:10. That’s 1 part bleach for 10 parts water.

Coronavirus: The CDC state that 5 tablespoons (1/3^rd cup) bleach per gallon of water or 4 teaspoons bleach per quart of water is effective against coronavirus.

Measure out the amount of water required.
Measure out the amount of bleach needed (1:10 ratio based on the amount of water).
Add the water and bleach to the mixing jug and carefully mix.
Carefully pour the mixed solution into a plastic spray bottle and use to disinfect surfaces as required. Be sure to label the bottle as bleach disinfectant!

There is some debate as to how long this disinfectant solution remains effective as it loses disinfectant power quickly when exposed to heat and sunlight. With this in mind, it seems sensible to make small batches daily and discard any leftover.

How To Make Antiseptic Wound Wash (Dakin’s Solution)

This homemade antiseptic is known as Dakin’s solution (also known as Dakin’s fluid & Carrel–Dakin fluid) and it was developed by an English chemist, Henry Drysdale Dakin and French surgeon, Alexis Carrel, it was first used in the First World War to treat soldier wounds and fight infection. The Dakin’s solution recipe is made up of Clorox or similar chlorine bleach, baking soda and water, that’s it…

Dakin’s Solution Recipe

You will need:

Clorox or similar household bleach (Sodium hypochlorite solution 5.25%). Don’t use thick or scented bleach
Sodium bicarbonate (baking soda)
Tap water
Cleaned/sterilized pan with lid, measuring cup and spoon, jar with a lid.

How To Make Dakin’s Solution

Wash your hands
Measure out 32 ounces (4 cups) of tap water. Pour into the clean pan.
Boil water for 15 minutes with the lid on the pan. Remove from heat.
Using the sterile measuring spoon, add ½ teaspoonful of baking soda to the boiled water.
You can make the solution in one of four strengths. Measure bleach according to the chart and add to the water also:

1. For full strength – add 3 oz. bleach or 95 ml.
2. For 1/2 strength – add 3 tbls. + 1/2 tsp. or 48 ml
3. For 1/4 strength – add 1 tbls. +2 tsp. or 24 ml.
4. For 1/8 strength – add 2 1/2 tsp. or 12-14 ml.

Pour the solution into the sterile jar and put the lid on.
Make sure you clearly label the jar as Dakin’s solution, also including the strength of solution and date of expiry
Cover the jar with aluminium foil or store it somewhere dark, to protect it from light.

After opening the jar, throw away the remaining solution after 48 hours. An unopened jar can be stored for around a month if it is not opened, providing it is stored in the dark.

(Clorox image by JeepersMedia)

The Rocket Mass Heater: Everything You Need to Know

July 11, 2017

Looking for the most efficient way of heating your home? Perhaps you’ve heard all about rocket mass heaters and just how clean they are? Whatever the reason, this guide takes a closer look at these heaters, explains how to build them, and covers all of their benefits (of which there are many!).

Wait A Minute… Just What Are Rocket Mass Heaters?

You’re likely here because you know all about rocket stove mass heaters and the benefits that they provide. However, for those who may be less than completely up on everything that these handy heaters can offer, here’s a quick summary.

Rocket mass heaters can:

Heat up your home with 80% to 90% less wood than is required with a traditional fire or log burning stove.
Exhausted output is practically all steam and CO2 (this is minus a little smoke at the beginning).
Heat from a single rocket mass fire can burn and heat your home for days on end.
A rocket stove mass heater can be easily built within the space of one or two days (less if you have a helping hand from friends or family).
When being particularly careful, you can build a rocket mass heater for under $20!

Rocket Mass Heaters… What Are People Saying?

Rocket stove mass heaters have great reputation amongst the survivalists and off the grid living crowd. Here are some of the most common comments that you’ve likely heard:

“I burn nothing but dead branches, and the heating within my home has never been warmer”.

“They burn cleaner than any other form of heating… and are a lot more efficient to boot”.

“I’m a city dweller who uses rocket mass heating to cut down my bills”.

So, now that we know that these really are the most efficient forms of heating on the planet, let’s get down to the nitty gritty of how they work, and what you’ll need to build one.

Rustic rocket mass heater used to heat a permanent tipi

The science behind a rocket mass heater

OK, so you may be wondering just how rocket stove mass heaters work, particularly as they seem to buck all the trends and go against all of the fire guidance that you’ve ever been taught (e.g. they output no smoke and the wood burns sideways).

What’s more, with a 75% efficiency rate you’d think that the most wood you could possibly save on would be the remaining 25%, right? And to top it all off, just how on earth can such a contraption not emit a plume of smok,e given that there’s a gaping big hole right in the top of it?

Well many of these questions are answered as soon as you see a rocket mass heater in action, here’s a quick overview…

How rocket mass heaters work – In detail

With the sticks within a rocket mass heater stood straight up, it’s only the bottom ends that burn and, what’s more, as they are at a junction within the heater, they burn sideways. The heat within is also insulated, which is why rocket mass heaters get so hot. As this naturally has a strong convective current, encouraging hot gasses to hit the barrel where they then expel much of their heat, consequentially cooling the gasses and making them easier to push around the heater. The gasses that finally exit are then simply made up from steam and carbon dioxide.

The main magical act that makes a rocket mass heater super special, and the main working of the rocket mass heater that we should be in awe of, is found within the heat riser. Here this open ended combustion chamber, coupled with a strong convective current, ensures that the smoke never gets sucked upwards and instead the air is continuously sucked in from the wood filled hole, meaning that no smoke escapes at all. In fact, it’s so hot within this top region that most of the smoke gets burned up!

How to build a rocket mass heater

2 Rocket mass heater plans from the tried, tested and completely trusted experts

The ‘Bonny Convection Bench’ rocket mass heater

The first tutorial is based upon one of the most popularly referred to designs for rocket mass heaters there are. Constructed by Ernie and Erica Wisner, this is a roadmap that has been carefully put together by two engineering veterans (who reassuringly have over 700 rocket mass heater builds under their belt).

Here’s the link for the ‘Bonny Convection Bench’ rocket mass heater professional build plans. It currently cost $25 but they are professional quality build plans that could save you $1000s

‘RocketMassHeater-Annex6’ rocket mass heater

Need a pretty large rocket mass heater for your home? Well, the second tutorial below are for a heater that’s more than capable of heating a 3 storey, multi-level family home, even in cooler regions such as right by the coast. The reinforcement within the plans along with the in-built air flow channels ensure that any flooring, hardwood or otherwise, is completely protected whilst providing for effective circulation that heats the whole house.

Here’s the link for the ‘RocketMassHeater-Annex6’ rocket mass heater professional build plans. It currently cost $25 but they are professional quality build plans that could save you $1000s

If you need an adapted plan to fit within your cabin then here it is. This design maps out an eight inch diameter rocket mass heater which takes up just 3.5 foot by 9 foot on the floor.

Rocket mass heaters versus the traditional wooden stove

There may be many readers out there who are avid fans of the conventional wooden stove, and who may be seriously pessimistic about just what a rocket mass heater may be able to offer them. So this section is dedicated to demonstrating just how a rocket mass heater compares when talking about heating efficiencies between the two.

“They say that a current wood stove is 75% efficient… so if the most improvement that can be seen is 25%, and rocket mass heaters can heat the home with a tenth of the wood… isn’t a rocket mass heater then 750% efficient? And why wouldn’t 100% be the maximum efficiency rate at which you can operate?”

The statement above sets out both a confusing landscape as well as a few common misunderstandings. And there are two ways in which this conundrum can be answered.

First, you should measure the temperature and volume of smoke that leaves your traditional wood stove (in short, it’s both extremely hot and of a large amount) and compare this to the exhaust found within a rocket mass heater (where there is a trickle of output that has a temperature of a little more than room temperature). This shows that there is far more heat that is retained by the rocket mass heater than by the conventional stove.

Second, we should look at the figures. Being 75% efficient does not consider the heat that escapes up through the chimney in smoke form. If we were to test a conventional oven within the lab we’d find that between 14% and 16% of the heat were escaping in smoke form alone. So then the 75% rating then becomes 64%. The higher rating is simply marketing spiel helping the big stove companies in their quarterly figures.

Lastly, we must consider that this original 75% may not be all that it seems in any event. This is a rating that was found within a laboratory with experts who were focused on getting the very best rating (and therefore skewing the results). So even though a wood stove may be able to achieve 75% when in ideal laboratory settings with a bunch of experts, the rating that you’ll receive within your home is likely to be far less. In fact it’s been found that on average the operating efficacy of a conventional wood burning stove tends to level off at around 35%, which becomes ever less efficient for those who are opting to burn damp leaves (where efficiency can run at something like 5%!). Now in comparison we take rocket mass heaters, which have no way of losing their inner air flow, and thus never lead to a slow, inefficient burn.

If you liked this post, but you’d like something a bit simpler to build first, why not check out our DIY rocket stove post?