I’ve been putting this mini through its paces this weekend. I haven’t had a single print failure yet! They’re all gorgeous and the new bed material is friggin fantastic. The bed leveling is really buggy for me though and I think I’ve figured out why.
As many have noted, if you’re using PLA, the bed leveling will begin to fail. I spent all weekend doing prints and found that the failure rate this weekend was about half. It would press waaaay too hard on the corners, pushing the entire bed down.
On close inspection this was due to just enough PLA oozing out of the tip to inhibit the condictive connection between the nozzle and the washer. If I pre-heated the nozzle and scrubbed it clean first with a brillo pad or some other more abrasive source, then babysat the process and made sure it was perfectly clean before the level, it worked fine.
While this does work, it is a pain in the ass. Is there a way to manually level the bed? Maybe I should just alter my config to not have the bed-leveling and only run the default occasionally to re-level? I rarely ever have to level my taz4.