Learning how to CNC mill circuit boards

This is the end result -- a pedagogical class C amplifier for demonstrating output waveforms. It comes from EMRFD, a classic RF design book. I used some headers so I can swap out parts and configure bypass or feedback configurations. It's not particularly useful, but it's a good test of the milling and construction process.

I used Kicad for schematic capture, and did isolation milling, through holes, and the board cutout on my desktop CNC mill. It took about 2-3 hours for design, CAM, and milling. I'll get faster with more experience, though.

There are some defects (the ground plane connections are perilously thin!), but the board passed continuity tests, and proved successful. I need to do some experimentation with cut depths and engraving bits to dial it in.

I've heard soldering milled boards is tricky, but it went very well for me. No issues with solder bridges or cold joints. I think my use of Flux and patience worked out rather well.