Designed this to enclose the Ultimaker 3 build space for higher temp materials. The top enclosure is 4 pieces, made up of the 2 sides and main cover made with 2 bends (90 & approx. 115 degrees). Once the bends are made, the side pieces are welded to main piece and the edge are cleared with a router. The slots in the back allow for tubing and power and are protected with designed TPU inserts. The door is non-invasive and uses 2 stationary posts and 2 edge locking latches. I added a Temp/Humidity monitor purchased on Amazon