Bed Leveling Woes
Posted: Fri May 06, 2016 7:13 pm
Hi, I've had my Rostock Max V2 for a couple of months now, and I've made some relatively small prints without much problem up until now.
I've reached the point where I wanted to start printing some larger parts that I had designed, and I've been noticing some shearing at and adhesion problems near the Y Tower when I get near there.
So after some reading on the forums, I bought a dial indicator and printed off a mount for it and tried to do a more precise leveling with that.
Somewhere along the way, my bed got way out of whack on leveling and now I'm having a heck of a time even managing small prints. I had everything dialed in 3 points near the towers, and I took a small break. At one point, I noticed that the belt on the Y tower was rubbing against the rail because the top pulley was slightly off angle, resulting in the belt sliding to one side. I adjusted position, but did not think to consider testing and equalizing the belt tension on all three towers.
After I came back from my break, the bed was way out of level - I had to unscrew the Y-tower endstop screw several rotations just to get it back to level, and the X tower end stop screw had to be screwed almost all the way in, and now I had some weird doming when the nozzle was traveling from the middle out to the Y and Z Towers; the z height would raise and then lower on the way to the Y tower, and the dip and then rise back up again on the way to the Z tower.
The X tower has been fine this whole time. I've tried adjusting the tower rotation in the EEPROM, and it has had a minor effect, but I think I read somewhere that you should only change the values by 0.5 to 1.
So I redid the belt tension in all three towers today, and I bought a digital protractor and measured the angles on all the towers, and they're all within 0.1 degrees of 90 (unless I used it wrong).
But I'm still having trouble leveling the bed off now. It has a convex movement when travelling to the Y-tower, and convex on the way to the Z tower. I also did up a quick 6 point travel macro to have the hot end travel in a hexagonal route around the print bed, at it is *way* high at X0 Y-90 Z0.2 (like almost 20mm off of the print bed), and then low at the opposite points.
I'm at a complete loss as to where to proceed from here. I'm kicking myself for even messing with it in the first place. Can anyone help me please? Everything I have on the machine is stock, but it's with the most recent parts, the injection molded carriages and the arms that go with.
I've reached the point where I wanted to start printing some larger parts that I had designed, and I've been noticing some shearing at and adhesion problems near the Y Tower when I get near there.
So after some reading on the forums, I bought a dial indicator and printed off a mount for it and tried to do a more precise leveling with that.
Somewhere along the way, my bed got way out of whack on leveling and now I'm having a heck of a time even managing small prints. I had everything dialed in 3 points near the towers, and I took a small break. At one point, I noticed that the belt on the Y tower was rubbing against the rail because the top pulley was slightly off angle, resulting in the belt sliding to one side. I adjusted position, but did not think to consider testing and equalizing the belt tension on all three towers.
After I came back from my break, the bed was way out of level - I had to unscrew the Y-tower endstop screw several rotations just to get it back to level, and the X tower end stop screw had to be screwed almost all the way in, and now I had some weird doming when the nozzle was traveling from the middle out to the Y and Z Towers; the z height would raise and then lower on the way to the Y tower, and the dip and then rise back up again on the way to the Z tower.
The X tower has been fine this whole time. I've tried adjusting the tower rotation in the EEPROM, and it has had a minor effect, but I think I read somewhere that you should only change the values by 0.5 to 1.
So I redid the belt tension in all three towers today, and I bought a digital protractor and measured the angles on all the towers, and they're all within 0.1 degrees of 90 (unless I used it wrong).
But I'm still having trouble leveling the bed off now. It has a convex movement when travelling to the Y-tower, and convex on the way to the Z tower. I also did up a quick 6 point travel macro to have the hot end travel in a hexagonal route around the print bed, at it is *way* high at X0 Y-90 Z0.2 (like almost 20mm off of the print bed), and then low at the opposite points.
I'm at a complete loss as to where to proceed from here. I'm kicking myself for even messing with it in the first place. Can anyone help me please? Everything I have on the machine is stock, but it's with the most recent parts, the injection molded carriages and the arms that go with.
