What angle is the frame at, David’s advice
Pretty standard. It seems like there is issue with bottom belts being too tight, but I’m not sure what to look for. It performs ok in the middle of the sheet.
Only other thing I noticed, when I press release tension, nothing happens, it makes a slight noise but tension is still there. If I press it again, then at releases it, but then you have to go through retract/extend procedure.
It’s being worked on but no fix yet.
Understood. Not a huge deal. Do you happen to have any other suggestions to what I could look for to diagnose this issue I’m having?
@themanro This is just a thought because I dont know how calibration is retained in the memory. Could it have over compensated with the arms being in the wrong position and it needs to be loaded from scratch?
This calibration was done with clean yaml file. I think it did help to not get stuck in low fitness loop.
@bar any other thoughts on why this could be happening?
Yeah, this is a bug that I thought I fixed, but I ran into that the other day too. It’s on my TODO list!
Hmmm…Can you try running the calibration process with a lower calibration force?
That should reduce the tension in the belts
Roman Rusinov wrote:
@bar any other thoughts on why this could be happening?
you could just be having the sled not sliding cleanly. waxing the bottom of the
sled or putting slippery tape on the bottom of the sled can help
some people have found that the 15 degree angle that’s listed in the
instructions isn’t enough and that they got better results tilting to 20-25
degrees.
David Lang
Ross O’Connor wrote:
@themanro This is just a thought because I dont know how calibration is
retained in the memory. Could it have over compensated with the arms being in
the wrong position and it needs to be loaded from scratch?
the result of calibration is the coordinates of each anchor (as he posted
earlier) and what he posted looks plausible.
If the Z offsets are wrong for the arms, the coordinates are going to be wrong
(and the fitness will suffer as well)
David Lang
UPD: We are cutting!
I removed the wing nuts from the bolts where belt anchors go, so they can pivot. That alone improved a lot of things. Calibration ran without hiccups.
Sled still lift ever so slightly in places, but one I get vacuum hooked up it should be enough weight to keep it down.
There is some stutter here and there, so I’m going to try adding some wax to the bottom of the sled.
Accuracy is pretty good, however I had a 5mm deviation on one of the corners of the bottom shelf piece. Not sure what caused that. I think that was near the corner of plywood sheet. So maybe I need to calibrate using even larger perimeter (I did 2000x1000).
There was a hiccup with the travel passes, where bit was suppose to be above the surface, but didn’t. That might be those settings in fusion that I didn’t get right.
Overall, not too terrible for a first cut.
If someone knows how to improve tolerances — I’m all ears.
I am after this too. What was your fitness score that you cut the box jointed box with?
Also I am wondering now if changing the calibration force will make a difference in fitness that will affect accuracy.
Testing that out today. I will check on the fitness score. I think my inaccuracy could be due to the bottom belts fighting up in the bottom corners a bit.