Parametric Button Covers for DIY Stream Deck

thingiverse

The button covers included in SuperMakeSomething's DIY Stream Deck project do not allow for acrylic cutting tolerances. By my measurement the acrylic squares from litko vary by about 0.3mm. Glue is not recommended for acrylic, as the vapors will leave visible fogging and streaks on the clear surface. The button covers MUST be printed "just" tight enough to pinch each acrylic square. I found that by printing the cover with a space 0.25mm smaller than the largest keycap dimension, I got a satisfyingly firm click and the acrylic is very hard to remove from the button cover. ------------------ We can get around this by measuring each acrylic square and printing a matching button cover that will fit exactly. To use, download SuperMakeSomething's PM-1003_-_Button_Cover.stl file from https://www.thingiverse.com/thing:4650060 and save in the same folder as the .scad file. Open the .scad in the free openscad application. Adjust the key_size and squeeze parameters, then export the new .stl file. --------------- Other Notes: Larger key sizes will cut away too much of the wall, and your slicer may not print there. That is ok. There is enough material left surrounding the hole that the button still works. At first I used my micrometer to measure all my acrylic squares. I printed all the button covers with the largest measurement, but the acrylic squares were too loose. Reprinting, I sized each button cover to exactly match each acrylic square. I still had trouble fitting the button cover on one of the 6 spots. So I also removed some of the material around the 4 wings, allowing me finally fit the last button cover to the switches.