Printhead crashes on bed on second print

wamwam · December 26, 2020, 1:13pm

If you’ve eliminated all mechanical issues - definitely try it out @acbellini.

Mechanical issues checklist (simplified, see post for full details from Velleman support, or follow the manual again)

Test the piezo sensors

Do not use too much oil on the rods for the copper bushings

Check the vertical sleds for their width, make sure that the zip-ties are very very tight

Check whether the edge of the “Buildtak” sticker (that is glued to the printbed glass) is cut off.

Make sure the bed is not pinched by the 3 grey alignment studs✅

Check if the belt tension is not too loose. Tighten it as tightly as possible.

Check whether the end stops are mounted at the correct distance from the roller bearings✅

Check whether the bolts (magnetic cups) at the end of the diagonal rods are screwed tightly✅

Check if the 2 bolts at the end of the 6 x DIAGONAL RODS are tight enough✅

AUTO HOME (home all axes - end stop determination).

CALIBRATE HEIGHT (height determination)

AUTO CALIBRATE Print head crashed into bed

At least now, having upgraded the firmware, I can print and finally focus on learning how to tune prints!

https://forumtest.whadda.com/t/vertex-delta-k8800-marlin-firmware-2-0-7/33751

(Let me know if I can help, as I’ve just done this recently myself)

Good luck!