little annoying errors
I experience these errors from the beginning: it est may 2018.
I thought they would improve with the updates but never did ...
- when a print starts, the bed is checked with the sensor. My nozzle always leaves one, two sometimes more ... blobs of molten filament while testing .. which i then quickly have to wipe away before the printing starts.
- when changing filament during a print, after the message to confirm the new filament is extruding fine, the printer restarts whith the print and while getting back to his starting position always extrudes some filament while moving ... which again creates some imperfections, blobs of filament.
this is EVERY time.
It should not extrude while getting back to the starting position to start printing with the second color/filament.
What is wrong? Do other expereince this also?
RE: little annoying errors
problem number 1 is common - fix is change the start g-code to not heat the extruder up above 160C till after the bed level, after the home the heat and wait on the extruder.
problem #2 is also common , I haven't seen any good fixes except to wait to grab the purge till the extruder moves back to the print
RE: little annoying errors
Yes, and we use custom gcode to prevent it.
We preheat the nozzle to something less than print temp, 185c, the bed to normal 60c, perform the mesh leveling, then heat the nozzle to the final print temp 215c.
My gcode looks like this:
M115 U3.7.1 ; tell printer latest fw version
G90 ; use absolute coordinates
M83 ; extruder relative mode
G28 W ; home all without mesh bed level
; preheat things to a low temp
M104 S185 ; set extruder temp
M190 S[first_layer_bed_temperature] ; set & wait for bed temp
M109 S185 ; wait for extruder temp
; soak PINDA then level
G0 X50 Y50 Z0.15 F3000; this is a good PINDA heating position
M860 S35 ; wait until PINDA is >= 35C
G80 N7 R5; mesh bed leveling
; heat to extrude temp
G0 X0 Y-3.0 Z10 F3000; this is a good nozzle heating position
M109 S[first_layer_temperature] ; set & wait extruder temp
; purge
G1 Y-3.0 Z0.15 F1000.0 ; go outside print area
G92 E0.0
G1 X60.0 E9.0 F1000.0 ; intro line
G1 X100.0 E12.5 F1000.0 ; intro line
G92 E0.0
M221 S{if layer_height<0.075}100{else}95{endif}
RE: little annoying errors
problem #2 is also common , I haven't seen any good fixes except to wait to grab the purge till the extruder moves back to the print
That's what I also do everytime ...:(
RE: little annoying errors
Yes, and we use custom gcode to prevent it.
We preheat the nozzle to something less than print temp, 185c, the bed to normal 60c, perform the mesh leveling, then heat the nozzle to the final print temp 215c.
My gcode looks like this:
M115 U3.7.1 ; tell printer latest fw version
G90 ; use absolute coordinates
M83 ; extruder relative mode
G28 W ; home all without mesh bed level
...
M221 S{if layer_height<0.075}100{else}95{endif}
May I ask where you add this code?
I presume in PRINTER SETTINGS --> Custom G-code --> Start G-code?
RE: little annoying errors
Yes - that is from Printer>Custom G-code>Startup ...
RE: little annoying errors
If it is oozing during the mesh bed leveling wouldn't that indicate the temp of the nozzle is too high and would cause oozing/stringing issues during printing as well?
RE: little annoying errors
If it is oozing during the mesh bed leveling wouldn't that indicate the temp of the nozzle is too high and would cause oozing/stringing issues during printing as well?
No ...