Kossel 220mm Hot Bed Spacers / Mounts

These are spacers designed to mount a 220mm diameter hot bed to the Anycubic Kossel Linear (and other similar Kossel Delta printers). They're designed to fit a printer with 20x20x240mm extrusions (300mm triangle), using M4x10 socket headed screws and M4 square or T-nuts. The spacers are mounted 45mm from the end of the extrusion, and are shaped to fit the curvature of the bed at this position.

To provide clearance from the electronics, the spacers raise the hot bed 10mm above extrusion. The o