Needed to mount a part to a machine, so I developed this method of making a countersunk screw profile perpendicular to the plane of my material. Cut with 1/8" acrylic.
This is a small sample piece - many of the layers can be thicker and larger to your needs. Makes for an easy way to mount to an existing base (in my case a machine).
The rectangular “washers” in the interior guide and hold the screw in position. You can adjust tolerance or turn into slot for less precise mounting.
10-32 machine screw 1-1/2" long. You can adapt to any screw - even self-tapping if needed.
0.125 x 0.625 slotted spring - you can adjust to other pins or other screw mounting.