Laser + Acrylic + LED + electronics = nerdgasm
I’ve been messing around with setting up a capacitive touch control panel for my electric car project for quite a while and now that the GF has arrived I get to build some better true-to-life mock-ups to test out.
The blue PCB is a capacitive touch sensor breakout from adafruit.com
The acrylic is just a 2" square not anything remotely like the actual design, but the engraving and score patterns are for helping me test the functionality of the circuit itself because the capacitive touch is sensitive to wire lengths, wire diameter, distance from the surface of the touch pad, etc.
I used the glowforge to cut a score into the acrylic about halfway through the thickness (Thick PG Clear) and turns out the thread fits perfectly into the score using the tip of an X-acto blade to help seat it into place (the score is too narrow to use sewing pins for that!)
The semi-circular curve at the end of the score helps to increase and target sensitivity for the touch pad at that area. I might make it a more complete loop at the end but right now I prefer the aesthetic of this open curve.
Of course a nice blue LED just sets it off like mad. I love the way the scores look when lit!