Bed slopes and y assembly does not sit on all 4 pads
When assembling my mini, I noticed after step 8 (after applying the pads but before attaching anything else) that all 4 pads of my Y assembly did not touch the table. The pad that is near where the LCD connects is about 1mm off the table.
I connected support, and they said continue to build it and see how it went, and I did. I then managed to finally get the calibration to look very good and then decided to use the 60mmx60mm square to get a bit more precise.
Well, looking at the bed with the LCD on my right side, all lines were slightly stringy starting at the left front to a line approximately from the rear right corner to the near the middle of the front edge and okay for a fair chunk of the remainder, but the more towards the right back the thinner and thinner it got (extremely thin at the right rear corner).
I then checked the bed, and the left back, left front, and right front all seem relatively close to the same height, but the right back of the bed is a good 1mm higher than all of them. I then checked the bed with a ruler, and the bed did not seem warped.
So, it appears I have a upwards slope towards the back right off the bed which the mesh doesn’t handled too well. And I do not know it it is related to the Y assembly pad issue.
I assume something needs to be fixed here?? So how do I lower just one corner of the bed??
If that assumption is correct, I would appreciate as detailed instructions as possible.
Thanks.
RE: Bed slopes and y assembly does not sit on all 4 pads
I'm building my mini+ and experiencing the same Y assembly issue. I presume one would be using the table to 'align' everything.
Like this there's no way to have the nozzle and the bed perpendicular nor can this be recovered by the bed leveling.
RE: Bed slopes and y assembly does not sit on all 4 pads
First I loosend all the screws (back and front) almost to 1cm and then tighten them again.
I noticed the lifting starts when adjusting (and only when) the screw beneath the N in the front plate is being tightend.
Can somebody confirm/debunk that the front Y plate used on my printer (production date: 16/12/2020) is indeed the adjusted Y plate ?
( https://github.com/prusa3d/Original-Prusa-MINI/releases/tag/R7)
RE: Bed slopes and y assembly does not sit on all 4 pads
The best way to confirm is to look at the plate, All parts have their release number marked somewhere on the back (or somewhere else not immediately visible when the printer is assembled.
RE: Bed slopes and y assembly does not sit on all 4 pads
I have parts ranging from F1 to F4. The front and back plate are F1 & F2, so definitly not G7
Should they have been the latest version ?
RE: Bed slopes and y assembly does not sit on all 4 pads
First I loosend all the screws (back and front) almost to 1cm and then tighten them again.
I noticed the lifting starts when adjusting (and only when) the screw beneath the N in the front plate is being tightend.Can somebody confirm/debunk that the front Y plate used on my printer (production date: 16/12/2020) is indeed the adjusted Y plate ?
( https://github.com/prusa3d/Original-Prusa-MINI/releases/tag/R7)
Corrected link:
https://github.com/prusa3d/Original-Prusa-MINI/releases/tag/R7
RE: Bed slopes and y assembly does not sit on all 4 pads
@gromit21
They only increase the number on the parts that change, so an R7 printer will have parts that are R1 (design has never been changed) through to R7.
Note that parts from the factory have an F number, so an "R1" part printed by Prusa will be marked "F1", they are the same design but marked so that Prusa know if it's an original or a user printed part.
To be honest, many of the changes are fairly cosmetic or to facilitate assembly in the factory, I wouldn't be too concerned if you don't have the latest variant.