"Subtraction" Block (With Perimeter Standoffs) for Use in the Design of 60% Keyboard Cases

This is a "subtraction" block used in the design of standard 60% tray mount keyboard cases. It is used to subtract a tray cavity/well from your case design. The accompanying standoffs will sit at the bottom of the tray, and will support the PCB.

In your design process, I would recommend treating the block and the standoffs as two separate groups. That is, I would subtract the block from your case design first, and then lower the standoffs as a group into the well.

This is an alternate version of the subtraction block that I posted here: https://www.thingiverse.com/thing:4889211

This version has perimeter standoffs, whereas the other version does not.

Note that, for simplicity, this model does not include a "subtraction" model for the USB port.