Starting from a 200L drum, I designed the whole thing in Solidworks.

Thanks to excel sheet, lenght has been optimized to minimize number of losses.

Tube lenght was 6 meter long.

Not the best welds I ever made but I get better at it and love welding stuff.

I wanted something simple without complex guide. Linear guide was the solution. Screwed to the barrel on one side and riveted on the other side.

Made some tube caps. It was the opportunity to test the sketch drawing under solidworks.

A crank, bicycle brake cable for the grid.

Two hinges and bicycle inner tube all riveted to the door.

Happy cooking ;)