jeremiah.peschka

This is all awesome information. Thank you both. There's definitely no derailment here, I'm learning a lot from everything written above.

Yes! I had to read your post a time or two, but it clicked! I'm using a Shapeoko with limit switches and Carbide Motion has 9 pre-designated homing positions. Doesn't matter if they're an inch or a foot away from zero, it's a known reference point which then makes everything else easier. Thank you!

Long time lurker, first time caller... I've been learning CNC to build guitars, but one thing that's been a frustration is getting two-sided builds to come out with virtually no misalignment. Historically, I've had a few missteps that have resulted in significant misalignment. Today's process is: Placing the blank on the CNC. Drilling two holes along the center line (ish) Placing the blank on a pair of fixturing pins in a fixture plate from Saunders Machine Works. Securing the blank so it doesn't wander. Setting zero based on the top and center of the material. I'm finding the center by going corner to corner. Unfortunately, there's still 1/8" - 1/16" misalignment between the top and bottom of the body. It's not awful and can be taken off with a table router, but I'm wondering: How do y'all ensure that you can reliably flip a guitar on the CNC so you can do two-sided work?