Found mine for $10 at Goodwill. The fryer adds structure to hold the charcoal, keeps heat focused on the keg, while also giving you decent low-temp control. Comes set up with a propane burner that can be used to retort the syngas for making biochar.

This is the most expensive part of the extruder, but it’s the best way I’ve found to get sufficient torque for extrusion AND precise computer control. Open to suggestions and improvements, but this works.

The glass tubes on these particular heaters tend to break, check craigslist for used cheap ones before buying new.

I’ve succesfully run one of these generators with Syngas from the Metabolizer, and it produced 60hz/120VAC, under no load. Have not tried again, but results are promising. Other inverter generators can also likely work. If you buy from Harbor Freight locally (not amazon) you can get a basically-unconditional warrantee, which I recommend doing.

I got these to control with servos, but I switched to cheaper ones for that. These are still good for fine control of gas flow, and I use them to control the gas going into the engine.

This is for delivering the shredded plastic flakes to the extruder via vacuum line. Clear tubing isn’t strictly necessary, but it’s very helpful to make sure material is flowing properly.

These are for gaslighting (the good kind). Not necessary, but a really cool effect!

This kit lets you crimp 15/30/45A wires (different ferrules) with the same interlocking connectors.

I found that 1.5″ Tri-Clamp pipes fit perfectly inside the neck of the keg, which makes a better seal than 2″

I got mine on Amazon, but any vavle will work. I’ll these because they are easy to control with a servo motor.