Starch Plastic 2.0- Pressure Cooker Hacking

Step 2 Make the Pressure Vessle

In this step we will be modifying an ordinary pressure cooker to cook at 4 times it's normal pressure. As you would imagine this is extremely dangerous and you HAVE to abide by some safety rules. See the video below as to why you don't want an exploding pressure cooker.

First off this is possible to accomplish without being injured if done properly, however I assume no responsibility for you're mistakes and lapses in judgment. A safety full face shield must be worn at all times, ear protection must be worn at all times, and protective long clothing must be worn at all times. Finally I can only recommend this project if you are willing to construct some kind of enclosing structure to contain the pressure cooker or if you can do this outside and be several yards away from it with a barrier between you and it at all times.Moving on, now it is time to modify the valves on the pressure cooker. Since all pressure cookers are different and you most likely will not have the same one as me I can only give you steps that you must do to modify it. I would recommend that you get the smallest one you can find with the thickest walls, as it will be less prone to exploding. First you need to remove the safety blowout valve and replace that with either a pressure or temperature gauge that fits the threads of that hole. Next you can either keep the weighted release valve and manually use a 2X4 pressing on top of it to keep the steam in like I did or you can install a resetting pressure release valve with one of those pull tabs that release the pressure, the latter I recommend more but I did it the first way for simplicity sake. After you have done that you need to get a portable electric hotplate/burner to heat your pressure cooker. And thats it you're ready to make some high quality plastic.