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Hi Everyone,

I purchased a kossel delta printer kit a few months back and finally after a few bumps, faulty board and PSU, I have it working… sort of. The results of the G29 shows (see attached) that the bed is sloping, I believe this indicates that the end stops are not level. The carriages have screws inset into the top which trip the end ends stops, this allows for fine-tuning. I would like physically adjust the screws to better calibrate the printer. Would I be correct in assuming that after homing the machine (G28) each carriage is then retracted/positioned lower by an equal amount, therefore if each end stop were truely level the carriages would also be level?
G29 Results (1000x).JPG

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Not necessarily, just define one calibration point directly in front of each tower and fine tune the adjustment screws until all 3 are on the same height after homing.

And be careful with the hole autoclaibration, that works only well after you have it 90% perfectly leveled manually and even then the definitions are really weird. I have given up on it for the moment until marlin gets it to work. btw which firmware are you using?

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Thanks jk3dtek & Yumi3D.

I calibrated the end stops using the method Yumi3D suggested and the adjusted the Delta_radius to fix the curvature. After printing a test 10ml cube it appears I still need to adjust the DELTA_DIAGONAL_ROD, the printed cube has the following measurements X10.36 Y9.86 Z9.78. Is there a better way to calibrate the diagonal?

I’m not sure what firmware I’m using, the Arduino 1.65 sketch came with the printer, it’s titled Marlin.