I think that the CNC machine was moving too fast and that is why circles were coming out weird. At least I hope that is the problem, otherwise I didn't tighten everything down correctly or somehow the frame has gotten skewed somehow.
But the cut, instead of taking about 15 minutes, is now going to take a bit over an hour. I may have lowered the speed more than I thought.
now the total time estimate has dropped down to 40 minutes. I am not sure why bCNC has such a hard time estimating how long things will take, gcode is designed to have pretty exact timing.
Well, the problem wasn't just the speed. It is not moving the same distance on the y axis as it is on the x axis so everything is slightly stretched on the y axis.
There was a crash the other day which may have messed up some of the belts, or worst case bent a shaft of one of the motors, which would be a pain to fix. And kinda expensive.
After a quick inspection the motors aren't visibly bent, and the belts are certainly looser on one side than on the other. So I am hoping that is the problem. Either way it is a tomorrow jed problem, it is time for today jed to go home and eat.
now it says the total time is 16 minutes...
Go home bCNC, you're drunk.