In this repository you find the design files in .svg format for a thick 60% Apple Extended Keyboard plate. It's only designed to fit the ANSI layout.

A build log of my keyboard can be found here

In contrast to normal 1.2mm thin Alps plates, this was designed with thicker acrylic/aluminium/etc plates in mind. Since the clips for the original stablisers wouldn't fit, these designs come with their own stabiliser clips with fitting cutouts for the original wires.

The current design expects the stabiliser clips to be made from 3mm thick material.

For my keyboard I used one 3mm thick acrylic, and two 0.8mm polypropylen plates. This makes the whole plate about 4.6mm thick, perfect for ALPS switches.

Here are closeups of the plate and the stabilisers

Since the kerf from every (laser) machine is different, I take no responsibility for a perfect fit with these drawings. Please modify the drawings accordingly.