Nozzle stopping short during levelling/wiping process - Mini

General LulzBot Mini
#1

During the wiping process prior to beginning a print, my printer nozzle will stop short of the bed levelling washer and then the wiping pad - by more than a milimeter. It will repeat the process several times until failure when the “wipe nozzle failed” error pops up on cura.

Several fixes i have seen so far involve checking X-axis levelling, which has not solved the problem. I have ensured that my x-axis is level and that the z motors on both sides are tightened securely.

I am running Cura Edition 3.6.20, and just recently upgraded the Mini’s firmware to the latest version (as of 5/10/20). I also ensured to complete the process of reestablishing e-steps and z offset to their original values.

Can anyone explain what might be wrong? What i can do to resolve this?

#2

Is this a Mini 1 or Mini 2?

Are you saying the nozzle lowers itself above the bed level washer without ever actually touching it … and gives up?

Or… does it touch the washer?

#3

The nozzle moves down as if to begin the wiping process, but when it stops to begin the wiping process the nozzle is too far up (+ z) to reach the bed level washers or the wiping pad. It skims both, correctly making the leveling and wiping passes, but the nozzle is too high to make any contact.

#4

Did this happen before you upgraded the firmware?

The Mini 1 has a build volume of 152 x 152 x 158mm (X, Y, & Z)
The Mini 2 has a build volume of 160 x 160 x 180mm (X, Y, & Z)

I’m trying to work out if the wrong firmware and/or start g-code has been loaded.

It sounds like there is no mechanical failure… and it may just be a matter of setup.