Want to add some Gridfinity goodness to your Ender 3, but you're too lazy to remove the rail caps? Fear not, and put that screwdriver away!

Inspired by the spool holder that came with my Ender 3 Max Neo, this is a Gridfinity sidecar baseplate designed to snap onto 4040 rails as used in Ender 3 printers.

Note: Designed to be printed on its side for maximum z-strength. Tested with PLA+, however PETG is probably a more durable option.

Supports recommended if you need to preserve the magnet/screw hole dimensions.