I don’t get it. I have my @Printrbot Simple (modified maker) bed pretty much levelled manually and I have the induction probe with the proper firmware.
But the back side (Y > 0) is MUCH more squashed then the front site (toward Y=0).
Any ideas ?
The bed may be level, but it doesn’t mean the print head is. I would check to see if the smooth vertical rods are seated properly.
On my Simple Maker, I had a similar problem because the rear rod wasn’t all the way seated and it titled the whole print head forward.
So the Z probing and auto-level is only for deviation in the X and does not compensate for both X and Y deviations ?
There use to be an issue with Marlin firmware where it didn’t calculate the Y on the plane correctly. This was changed in the root Marlin firmware after the latest version of Printrbots firmware was released. You could try J Lairds marlin firmware that had this fixed and gives you options to reverse motors and endstops via gcode commands. https://github.com/j-laird/Marlin
Had been told before about this fork. Will surly give it a try. Thanks @Paul_Merry
Installed J Lairds firmware and the front to end layer thickness is MUCH more constant.
However it seems to be ignoring my prove Z offset (M212). I always used between -0.6 and -0.9 but I tried up to -1.4 with no noticeable difference. The tip is always too high.
Ok, after all found that one of my bed bracket (connecting the bed and the smooth rods) was broken and the bed tilted forward and was unstable while printing.
Was able to print replacement parts, at the same time moved the bed anchor points more toward the smooth rods to better handle the weight.
Not I can print well with the standard Marlin bedlevel firmware.
Will probably try the J Lairds firmware firmware again as it does have nice advantages.