Nozzle catches the paper during XYZ calibration
I did nylock mod, loaded the prusa bed visualiser, leveled bed to 0.022 variance.
Tried the XYZ calibration, and now my nozzle catches paper?
Is it due PINDA? (IF it is, should i just readjust its height?)
or something else?
Re: Nozzle catches the paper during XYZ calibration
The evil in me says "You are the expert that needed to do the mod, you figure it out."
But the nice guy in me says "The PINDA needs to be low enough to detect metal embedded in the heater bed. "
Re: Nozzle catches the paper during XYZ calibration
Did you level/calibrate your Z BEFORE doing the bed leveling?
If not the X axis won't be parallel and your bed will not be level when you finish the mesh part. I did that once and it took several prints before I noticed the left side of the bed seemed to be about 2mm lower than the right... I'd been playing with 7x7 at the time and actually never saw a problem with the prints, it just corrected for it.
But you really should consider upgrading to 3.7; the official 7x7 levelling firmware removes the main reason for doing the nylock mod anyway. I did mine before 7x7 was official and I've left it that way but if I ever need to disassemble my bed again there's a strong argument to go back to stock spacers for ease of re-assembly. But I doubt that will happen soon as I am also running printed bearing clips that are bottom-accessible; the only time I'd need to do any disassembly of the Y frame now is if my heatbed fails...
Re: Nozzle catches the paper during XYZ calibration
The evil in me says "You are the expert that needed to do the mod, you figure it out."
But the nice guy in me says "The PINDA needs to be low enough to detect metal embedded in the heater bed. "
I adjusted (lowered) again PINDA (doesnt catch paper anymore), than reset the XYZ, found "ideal" Z adjustment in first layer calibration ... but no matter what i do, first layer of my front right corner is always squishier than rest of the bed....
Re: Nozzle catches the paper during XYZ calibration
Mesh bed leveling used to be an art form. But recently a push was made to enable a better bed calibration. It was implemented in v3.7.0 firmware.
If RF is high, then adjust your RF bed screw down a bit (since you did the mod, may as well try using it). Or, put the solid spacers back and upgrade to v3.7.0 firmware.
Firmware version 3.7.0 (or later). In the LCD menus, select the 7x7 mesh bed level method, do not use the magnet detection, and select 5 samples per point. Keep these settings until you are comfortable with the calibration process and what any changes to it mean.
Update with how it works for you.