Picked up a new MultiFunction Slab from a local CNC shop (at the local lumber yard). Got it home, eased the edges and the slots and hand-holes with an 1/8" round-over bit... and then dug out my PrecisionDog.us bench dogs and rail dogs.
The bench dogs *barely* fit in the holes, pretty much have to tap them in, and then tap them back out from the other side using a rod or something similar.
The rail dogs... well, only the tips fit, so that makes them fairly non-useful at this point.
Measured the dogs at ~19.95 mm, according to my Mitutoyo 6" Digimatic calipers.
Measured the dog holes at ~19.74 mm. I realize calipers aren't the most exact or best way for checking the ID of holes, but in this instance, they're a) what I had available and b) probably close enough.
Given that the plans provided to the CNC shop called for 20mm holes... what are my options? I put a feeler out to them to see if they can/will fix it, but I'm not sure if it's simply within the +/- tolerance of the machine they used.
I'd be fairly unhappy if next time the holes come back *over* sized rather than under - I had plans for using the dog holes for locating fences, guide rails, etc. so they need to be pretty much spot on.
Not sure if a split dowel with some sand paper to act as a sort of 'flap' sander to get each hole to the desired size is a better path, or if there is something else?