I wanted to have my admin buttons light up but wasn't sure exactly how.
First I tried a half circle but was really not happy with the look.
Then I tried a full circle. I really liked this look but had a lot of trouble getting 4 of them in a row to line up perfectly. Between the laminate and the plexi things would get just off enough to bug me. Again this is where a CNC would simplify things.
Finally I settled on trying to mimic this shape from the original Discs of Tron CP.
To make the shape I had to route a 1/2 circle that was slightly larger than the button hole. Then I had to route a 1/4 circle that is slightly larger than the 1/2 circle.
To line all the circles up properly I drilled my circle patterns at the center of intersecting lines.
Then I could line up the patterns using the intersecting lines. Here I added another board so that when I routed I ended up with a half-circle.
Then I added a larger circle and a board with a 90 degree cutout that left me with a 1/4 circle.
Which left me with this pattern.
Here it is unlit.
And lit.
Here is the completed laminate. Time to start putting everything together.