I have 3/8" anchors and a piece of 3/8" threaded rod going down to the anchors. When not using my M4, the anchors are pretty unobtrusive or I can quickly unscrew the threaded rod and pop in a 3/8" hex bolt instead to keep the hole clean and then the only thing protruding up is the head of the hex bolt.
If needed later on, I can always get a bit of quick mix cement and fill the holes back in (drop in anchors and all) and it’ll be like nothing was ever there.
I wouldn’t worry about that offset for now. The difference the offset makes is likely pretty minimal and likely only an issue when making cuts closer to an anchor. Getting a frame set up and making cuts is much more important. You can always go back, make changes, and fine tune things later if you’d like.
I built a small version of this (each side is 2.5 ft, giving about a 12" square work area, it would be a couple inches bigger but the sled hits the corner braces) and got some pictures over the christmas break. I got a fitness of 0.7
currently two pictures and two videos of it calibrating.
I need to pull it out of the back seat of my car and try again with 0.88 firmware. I wasn’t especially happy with it, I think I need to reduce the calibration tension as it was causing the router to tip at times (which is why I tried recording video of the calibration)
