#Nozzle ~5mm above build plate for first layer

3 messages · Page 1 of 1 (latest)

main lodge
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Hi All,

I have a 2.4 that has been running great for over a year. I messed it up though and could use some help. This morning, I tried saving my zoffset to the printer.cfg from the mainsail web ui. It rebooted like any other time but told me it had problems with the MCS serial. I looked and the printer.cfg was empty. So I renamed a backup and got it going again. I decided to do the updates at the same time (maybe that's part of my problem). Now anytime I print the nozzle is like 5mm above the print bed for the first layer despite the Z on the web UI saying .3. The homing and quad leveling (with klicky-probe) both seem completely normal. I can do a Z_ENDSTOP_CALIBRATE and it acts normally too. With a thick sheet of paper it set it to -.28, which is very close to what's been in the past. The bed mesh routine seems completely normal too. I don't know what could be screwing up. Does anyone have any thoughts on what I could try?

Tim

main lodge
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I created a new image today but used the same config files. I have the same problem so I guess it's either config files or hardware related. I don't have the patience to pursue it anymore today. I'll pick it up tomorrow. Hoping someone brilliant might have an idea in the meantime.

main lodge
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I figured out the problem. When I updated to newer stuff, I don't know which update it actually was, klipper maybe. It told me that this line in the config was causing a problem.

relative_reference_index: 13

in the bed mesh section. I commented it out and did not pay attention to the other values in bed_mesh. Just now, I was combing through what changes had been made in the printer.cfg between when it worked and when it didn't and that was one of the few things. Since I had not updated yet I could uncomment that line without it griping about it. That turned out to be the problem. In the future, when I'm not trying to print something, I'll dig into the "new" bed_mesh settings. I suspect you need to do more than simply comment that out.

Cheers,
Tim