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  1. (Printer and SW specs at the bottom) I'm on the verge of tears for this problem: for some unknown reason, my printer simply skips the material priming at the beginning of the print. Instead of parking the head at the priming position and doing it, it first moves to the position, and then starts printing right away from there. Nothing chaged at all in slicer or printer configurations, I didn't touch anything in the start g-code or printer type or whatever. I had this problem a few weeks ago an I don't have a clue on what I did that fixed it, but now it's back. Extruder stepper works just fine in every other situation. Tried older gcodes from when the priming occured and it skips it too. Did multiple factory resets and firmware updates, and also changed the slicer version, nothing solved it either. When it worked again, it came back just as it started, out of nowhere. The last time it happened, after like the fifth factory reset and firmware update, the priming simply started working again, even though I was using exactly the same setup from when the problem started. Every different firmware and slicer I tried after it came back worked too. I'm at a total loss. Firmware: Tinker 17.02.1 Slicer: Cura 15.04 Printer: Ultimaker 2 I know the firmware is not from Ultimaker and the slicer is an older version, but like I said, when it works, it works with every firmware and slicer I throw at it, and when it doesn't, it doesn't work with any of them too.
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