Aight here we go, as promised https://twitter.com/karalissamuel/status/1259923001681874944
1) First of all you need a watertight container large enough to fit the whole body, and it can't be made of a reactive metal such as aluminium. A large old-fashioned vitreous enamel bathtub is about right
2) if you've got one where the entire body fits within the fill capacity of the container, you can skip a few tweets. But most recent bath tubs are a bit smaller than the average adult male so we'll have to cover how to fit it all in
3) the main issue with fitting a body in the bath is the length, and the simplest way to reduce this is to remove the lower legs. Its not easy to cut bone and muscle so the easiest place to cut is at the knee joint as shown here
4) you need to cut below the knee cap (patella) through the patellar ligament (not shown on diagram for simplicity), and through the 2 medial and 2 cruciate ligaments. These hold the shin bones on to the femur
5) Next you'll need some of this stuff, sodium hydroxide. It's sold in most household/hardware stores as a drain cleaner in granular form
6) how much of the stuff you need depends on how much fat and protein there is in the cadaver and the molar mass of the fatty acids in the body, which can't be precisely calculated without a laboratory. So we'll make some assumptions erring on the side of caution
7) Let's consider the fat first. Sodium hydroxide (NaOH) dissolves fat by a process called saponification, literally turning it into soap. The coefficient of NaOH to fat needed to saponify it completely is about 0.140-0.145 depending in fatty acids composition
8) that means to dissolve all the fat of a 180lb male with 30% body fat, as an example, you'd need (180Ă—0.3)*0.145= 7.83 lbs of the chemical. However its difficult to calculate the weight of protein and fat in a body.
9) The protein requires more calculations because hydrolysis of protein is not a widely used industrial process so there aren't ready-made standards. Therefore we return to school chemistry and match molecular weight of the chemical to that of the protein
10) the molecular weight of NaOH is approximately 40g/mol and that of the most common amino acid found in animal proteins, L-glutamine, is 146 so that we need a gram of NaOH for every 3.5-4g of protein
11) there's also other things to consider in the body such as water and bones, but we can't accurately determine the weight of those, so we'll assume an upper limit of 40% fat and process the rest as protein.

That works out per 10lbs body weight as about 3lb 2oz of NaOH
12) NaOH dissolves in water at 80°F at a rate of about 10lbs per gallon, so factor that in to your calculations of how much of the chemical you need.

You now have all the stuff you need, so time to start on the process itself
13) start filling the empty container with water, warm if possible. Don't go over half full to start with. By that time it should contain at least 20 gallons of water. Start tipping NaOH granules into the water slowly, stirring it with a stick. Don't get the solution on yourself
14) get the cadaver and remove any remaining clothes or accessories. Lower it carefully into the container with no splashing. If its heavy , affix 2 ropes on the far side of the container, place the cadaver on the taut ropes and lower it down into the solution coffin-style
15) ensure the whole cadaver is below the rim of the container, then pre-mix more NaOH in a plastic bucket (always add the granules to the water, not the reverse). Then pour it in until the whole body is immersed. Use plain hot water if you've used all your pre-measured NaOH
16)leave it in for 45-60 hours, that's how long it takes to completely hydrolize protein at 100°F. Keep the solution warm if you can, ideally place a gas ring under the container to simmer it. The warmer the solution the better but don't boil it dry. Top up any evaporative losses
17) if you've followed my instructions, you'll be left with a dull lumpy liquid with bits of soap and stuff in it. Skim off any solids. Start bailing out the water ; or if using a bath, pull the plug, but place a plastic strainer over the drain. Use elbow length rubber gloves
18) after the fluids drained off you should see a completely stripped skeleton. If some flesh is left, get more NaOH and go again. The bones will be easy to crush by hand. Grind them up on a tarpaulin and Bury The remains. They make a good fertiliser. Also Bury any solid residues
***DISCLAIMER*** I HAVE NEVER DISPOSED OF A HUMAN CADAVER USING THIS METHOD AND I DO NOT ENDORSE CLANDESTINE HUMAN BODY DISPOSALS
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