I am getting consistent >15mm position errors when moving near the edges of my 4 x 8 sheet. Find anchors works reliably.
I just went to remove the bit, and found that the router had spun (~10 degrees) in the clamps.
I that a possible (or likely) cause?
What steps should I take to figure this (error) out?
I would look at the retract force first. If it is high (>1200) then try reducing it until belts don’t retract reliably. If you can’t get it below 900 then I would look at sanding and lubricating the spools. The rotation of the router would not affect the position error, as the belts are around the router. Check the router clamps, they may be broken or loose.
Thanks. My retraction force is at 1000.
Spools are the new loose ones.
Clamps are as tight as I can make them.
Trying again, with white Lithium grease between spools.
Found what I thought was the problem: BR belt was hitting my dust cover. My spools are in BR-TL-BL-TR (bottom to top) order, with all Z’s at 34mm.
I removed the cover and successfully ran a dry run of my 80" x 40" grid of crosshairs on 10" centers after finding anchors again. Inserted a 60 degree V bit and made it 80% of the way thru my program (1mm deep) before I hit motor current threshold exceeding 4000.
TL and BL belts were extremely tight.
Thoughts?
I’m guessing that the Anchor points are raised to different heights for each belt.
That is correct. I put 22, 44, and 66mm spacers under TL, BL, and TR ends.
Didn’t have much success when I tried leveling them to 0, figured a little bit of downward pull would mitigate sled tipping, which I think it has.
2 Likes