Spiderweb when probing
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Hello,
How do you guys avoid making a bed full of dots and spider web when probing?
No matter how much I retract before probing I end up with a mess when probing is done.
/Niklas
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I probe at 190C and when the printer is loaded with PLA, I get the dots but not the threads. It looks to me that you are getting oozing, so probig at a lower temperature may help.
I haven't experimented, but the following might work better:
1. Heat the nozzle to a lower temperature, perhaps 170C
2. Extrude a few mm of filament very slowly (because of the low temperature), then immediately retract several mm.
3. Wipe the nozzle on a cleaning area before probingBut this is only an idea, and it will probably need to be modified to work well.
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I don't use any be compensation but do use the nozzle with a precision switch to probe the bed for homing. I find that 140 deg C with PLA is sufficiently hot to soften the plastic enough that I get accurate readings and good repeatability. Although it could be that on my set up it needs more force to trigger. Try it and see.
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Ah of course. Lower temperature while probing.
I wonder what s3d will do if I set a low temp in the starting script before the bedleveling routine.
I’ll experiment a little and return.
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Ah of course. Lower temperature while probing.
I wonder what s3d will do if I set a low temp in the starting script before the bedleveling routine.
I’ll experiment a little and return.
That's exactly how to do it, set a low temp, I use 150deg c, then set the real temp afterwards.
[c]M140 S[bed0_temperature] ; set bed temp
M190 S[bed0_temperature] ; wait for bed temp
M104 S150 ; set extruder temp to 150C cold enough to avoid ooze but get some temp on it
M109 S150 ; wait for extruder temp
G29;
G1 X5 Y20 F1500 ; avoid binder clips
M104 S[extruder0_temperature] ; set extruder temp
M109 S[extruder0_temperature] ; wait for extruder temp[/c]
