Ok I give. I could use some help with auto bed leveling and fixing centering issue.
Have google’d the heck out of this and there’s a lot of discussion but I can’t seem to find the right answer to fix it.
I’ve setup an inductive probe on a Prusa I3 clone running latest Marlin. Probing and printing is fine, but my bed center is off by the distance of the probe (33mm to the right).
I can home in S3D and it’ll return to 0,0,0. running G28 puts inductive sensor at middle of bed. If I do M114 after doing G29 the printer thinks the X axis is now -34 (sigh).
So when I go to print, items centered in S3D are now shifted to the right on the print bed.
I had the same issue on my Printrbot Plus. Adding the G92 line after the bed leveling tells the printer where it really is, not where it thinks it is. My bed is 250 X 250, so if your bed is different, the 224 number will change, but you can experiment a bit and fine tune it.
G29
G92 X224 Y0
Thx Gary. I’d seen a discussion on the printrbot forum that mentioned doing the G92 command, but had wondered if there was something else I could do in the firmware. I’m in the middle of a long print so will give this a try tomorrow.
Just a quick follow-up, checked on my printer and it just finished so quickly put in the G92 command and respective values, and this solved the problem. Given how so many people are running auto level I’m surprised there’s not more discussion on this(?).
So for those interested…in S3D, I’ve put within the scripts section G28, G29, G92 X0 Y150. The G92 data is specific to where the head is via M114 after I’d manually run G29. So this level sets it. Tried a quick print, and it’s back to normal with respect to knowing the bed layout.