X-axis shift when printing on right-hand side of the bed
Hi, my second problem with my Mk3 is more serious, but I wanted to check out previous posts before I asked this.
I am printing the same piece multiple times. They are hexagonal terrain tiles. 3 solid layers top and bottom, 20% infill.
If I pint 1 or 2 tiles, they print fine.
If I print 4 or 6 tiles on the same pass, I get this:
[attachment=0]DSC_1242[1].jpg[/attachment]
It doesn't happen on every print, only about half of them. If I move all the items to the left of the bed as far as possible, it has a better chance of succeeding. I read all the articles about axis shift. I've checked the rods and belts for debris/damage. I've tried to tighten the belt as much as possible, without stripping threads. My belt parameters are x:270, y:281. Slightly out for Y axis but that's not the problem.
I've oiled the rods and wipe away any black residue that forms. I get consistent good prints with just two items at the extreme left of the bed.
This is what a good print looks like:
[attachment=1]DSC_1243[1].jpg[/attachment]
Any suggestions please?
Re: X-axis shift when printing on right-hand side of the bed
Either the motor drive wheel is not properly fitted (loose screws) or the end pulley is too rigidly mounted so that it does not run freely.
Bear MK3 with Bondtech extruder
Re: X-axis shift when printing on right-hand side of the bed
Hi, and thank you for the reply. I've now checked the grub screws on the X-axis motor pulley. I was able to tighten them slightly, less than 1/8 of a turn. I tried a print that covers the left side of the bed and it seems better. One more thing to keep an eye on from time to time. I also eased the X-axis belt towards the centre of the pulley and idler wheel, but I think it already moved back.
I could do with a check-list, e.g.
After every print: check for debris, clean the sheet with isoproprylol if needed, check and clean nozzle if needed.
After x prints or n hours of printing: clean the sheet with soapy water/acetone. Check belt tensions, Check grub screws
...
Does anyone have such a thing?