First time I cut a horizontal line it dropped 1/4 in over 4"
Then it dropped 3/8" over 4"
Then it skewered on the Y axis as well almost an whole inch off x and y!
After this it erased my ini file (which I did not think to make copy of), So I manually entered my config data and it gives unexpected sled movement error.
If I have to manually reconfigure this it will have been the 6th time. I am beginning to get frustrated as I have been trying to get this to work since 7/15.
This started out as me just trying to erase a unwanted line on a sign that kept appearing. Now it is unusable at all.
I think if something is changed that force people to recalibrate, then it should be noted. Also, I’m a big proponent of giving people a means to not use the change until they are ready to recalibrate. We had a discussion regarding this in the holey triangular calibration thread but I was under the impression that the kinematics equations hadn’t been incorporated into a release. But I looked just today and saw a release was made last week and those changes were included. So, I can’t guarantee this is what cause the problem, but I suspect it is.
I just looked. The kinematics updates are from @c0depr1sm, merged on Jan 29.
I am pretty sure the kinematics updates should not cause this much change. At most, there would be about 6 mm change in the corners and at the top center. However, there are differences between this and the Holey Calibration implementation. I have not validated this.
Oh boy. I just remembered. There is a pretty big issue that I had to fix a while back, not in the main fork (the issue is in the main fork, but the fix is not). The chain stretch parameter is communicated from GC in scientific notation, but the firmware is not setup to read scientific notation. Because of this, everything gets messed up. This issue came with the pull request from @c0depr1sm.
I’m having major issues with my machine as well! I’m cutting 3mm acrylic in 2 passes each with a depth of 2mm with a tab depth of 2mm. It seams that the first and second tool paths don’t line up at all. Im cutting from a 4’x8’ sheet of acrylic and seam to only have these issues while the machine is cutting on the left most 12" of the cutting surface. Ive pend in red roughly where the cut should have been.
Im also working on the standard frame design (at least I think this one is the standard design). I do have room to extend the top beam to 12’ if necessary however I’ve been looking into replacing the 2x4 with the C channel used in the construction industry for securing electrical conduit. I hope that will combat the warping issue I’m running into with that wooden 2x4. I’ve also raised the top beam approx 18 inches after cutting 6 inches off the feet of the frame after I kept getting warning messages that the motors were too close to the top of the work surface. Lastly I have replaced the bungee cords with a counterweight system so that the tension is constant throughout movement. I don’t believe any of that would cause the issues Im running into but please correct me if I’m wrong about that. Thank you!
