My 3/4" conduit (from Lowes) is all 23.32mm. I printed the parts myself in PLA. I just recently migrated to the new 525 middle and z assemblies. I also took the opportunity to upgrade from a 2’x3’ rail setup to 4’x4’. All of this so I can cut out an iTopie frame. I am having a hard time getting the middle assembly square. First off the rails want to spread apart as they come out of the back of the middle assembly. To fix that should I flex them square and then tighten tension bolt b?
I am also not able to get the lower bearings by tension bolt A to ever touch the conduit (on X and Y), even if I crank down tension bolt A until that bearing can’t even move anymore. I’ve also messed with tightening down tension bolt B, but no change on that outer lower bearing by tension bolt A (on both X and Y). I know I will probably need to print out a new XY, but wanted to see if I tightened it down enough if I could get contact (see attached image).
It seemed that everything is pretty close and my initial cuts were fine, as long as they are a small area. I made sure to square up X/Y rollers, as the Y is always 1/4-1/2" off before I power up RAMPS. I can draw a 40x40mm, 20x20mm, and 20mm circle all starting at the same starting point and they measure perfect (using pen attachment). Where I started to see a problem and I was wondering if it has to do with the play is cutting out the part you see in the attached Estlcam shot. Each time the dw660 gets to about that area circled in green, the Y axis seems to stutter for a step. I don’t see this when moving it through manually with the LCD 10mm at a time in just the Y axis. So I was wondering if close to the middle of the build area if that play allows it to pop/stick a little. I also attached the gcode for the cut I am attempting. If you try it in the air, even without cutting I can reproduce the glitch. I don’t have anything else to try it on to see if it is just the gcode. I’ve had some odd behavior with Estlcam and holding tabs at times.
My belts all have good equal tension and the pulley set screws have blue loctite and are not slipping. I have no Z slip/sticking as I had experienced that early on, but have that resolved.
I ordered the steppers off of ebay, but they have been working fine. They currently have 0.7v set on the drivers, and I can use the LCD to move them from one side to the other using 10mm step, but cranking 400 at a time and it just slides over without ever stuttering.
I do not have any of the newer parts for rollers or corners. I’m using all of the other parts from before the new corner designs.
Any advise would be greatly appreciated!
VerticalRight.gcode_.zip (1.07 KB)