Hello!
After about 700 hours without complaint (PLA, PETG), a bad print image was suddenly recorded (e.g. a can with a thread could no longer be screwed).
In the forum it said: Replace the nozzle – whereupon I bought the “Hardened Steel 0.4 Nozzle Kit”. It was even worse.
So I bought a new, complete SV08 Hotend Kit.
Unfortunately unchanged: I can’t do good leveling (1st layer) anymore.
The mainboard, the proximity sensor switch and the hotbed have been replaced. Unchanged.
New PLA (Sovol, PolyMaker, eSUN) didn’t help either.
Therefore, the orca slicer calibration Tools brings bad solutions:
temptower from 185-200 are bad at all
flow rate (1 + 2) are all 9 bad (no smooth surface); tested from 0,85 to 1,2
I replace the motherboard and the sensor
I reset the printer and the orca slicer to factory default
I upgraded the firmware to latest 2.4.6
I bought a new SV08 Hoted Kit
I bought 4 kg new PET filament (sovol, polymaker, eSUN, sunlu)
I leveled ALL leveling options (Z, Quad, Mesh, Belt, Auto-Calibration etc.)
I try another Laptop / orca slicer
I bought a 2nd 3D Printer (AnkerMake M5), the all my Filaments (PLA, PETG) works OOB.
Hello,
After your 700 hours of printing, have you thought about regularly cleaning the elements of the printer (rods, pulleys, belts, …), tightened the nuts, … ?
Do you using a nozzle of 0.4 ? That is very curious : @mich0111 said maybe the temperature (the real one, not the defined one) is too low but i do not trust that, for me that look like than you using a too big nozzle (or a broken one). You first layer is not too bad… but not tight enough (per example). And at the middle, you have a big underextrusion… but that look like very regular, i never saw that.
PS: You changed lot of things on the machine himself but maybe you should compare the original parameters of the slicer (just to be sure that is not something who changed in the slicer by mistake).
Sorry misstyping - It was 200-235℃ in this case (PolyTerra PLA, rec. 190 bis 230°C).
With eSun PLA (recommend: 210-230℃) I tried 205-235℃
With sunlu PLA (rec. 210–240 °C, 100-200mm/s I tried 200-250℃
Z Leveling with SV08 Display, Factory refault SV08, NEW PLA Filament:
1st. run (Tuning->Offset Z: -01.68) then I corrected it to -00.58
2nd. rund (Tuning->Offset Z: -00.20) then I corrected it to 00.43
3rd run (Tuning->Offset Z: -00.00) then I corrected it to -00.22
and so on… up to 21 runs (this time so far).
As the SV08 permanet run into “Code 8” error, I can’t level atm so here is a picture from
the 21th run (the “best” result so far):
Yes, of course, several times meticulously precisely. Also unplugged and plugged in several times and contacts checked.
The nozzle thermistor readings are 22° (display) and 21.9° (Mainsail) at start. Then when heating up (Enter 250° or 230°) or load/unload filament → Code 8
ADC out of range : it’s look like a defect with the thermistor. What are the temperature curves (diagram) ? May you try mutliple down/up to see if the curves look smoth ? (to compare, that is my own when i set 160°C and stop)
can be an indication of bad heat transfer. Steel is less conductive to heat than brass - and if the problem worsens with steel, this may point towards a bad contact between nozzle and heater, or maybe a defective thermistor, giving wrong readings.
