RE: squaring. I spent WAY too much time on that first day trying to get it perfect. It was very difficult and I rebuilt most of the frame several times, trying to eliminate gaps like seen in the video. Really blew my expectation on build time to smithereens. I had set a day aside, and frame ate all of that.
I still havent actually powered up the laser (just had too much going on last couple weeks which limited my time to finish it up…) USB problems got a couple more sessions, where I could see it work just enough on Win 10 to keep trying, but not enough to control motion and verify homing. From memory, it would flake after a minute or two with an error to the effect of “The USB device has malfunctioned”
I then put it on a Mac, but… USB-C so I was using a passive adapter for the A end of the provided B=>A cable. It never showed up as such.
Finally, I added a USB hub [Native C to hub with A ports] and it connects reliably. Not ideal for me long term, but advanced the build…
Which brings me back to the squareness of the frame :
Despite all of that time spent early, and the VERY nicely designed parts, the right plexiglass panel did not line up for the fourth bolt.
I got it to work by making a slight shift in one of the mount blocks, hair over a cut edge, and also a slight flex of the pane to get the last bolt in. I hope it turns out OK like that, but I was again out of time [Holidays and living life] so I havent gotten back to the rest of the enclosure (Saturday…) so I can try a first burn.