Something I've wanted to try for some time, but didn't have a probe (that didn't rely on metal conductivity) to do it. Niche trick, but might come in handy later!
ADVENTURES! in surface height mapping and CNC. I think this is sometimes called surface digitizing, but I can see this coming in real handy for non-critical machining work such as engraving, perhaps. ----- thumbnail background: Nadjib BR / Unsplash.