RE: As of 6.4.0, the XL still crashes toolheads into one another. It is inexcusable.
There is not so much to calibrate on an assembled XL except the new instructions for the belt tension. And even if there were some kind of off-limit tension, the printer should handle that, else the tolerance for quirks would make the printer useless.
There is nothing special detected on the motion system.
Here the reliability ranking of our printers:
1. Voron 2.4 (with TAP)
2. CoreOne
3. MK3 and MK3.5 equal for different reasons
4. XL
And I even question the XL to be in the list as there is seldom printing success.
RE:
There is not so much to calibrate on an assembled XL except the new instructions for the belt tension. And even if there were some kind of off-limit tension, the printer should handle that, else the tolerance for quirks would make the printer useless.
There is nothing special detected on the motion system.
Here the reliability ranking of our printers:
1. Voron 2.4 (with TAP)
2. CoreOne
3. MK3 and MK3.5 equal for different reasons
4. XL
And I even question the XL to be in the list as there is seldom printing success.
There's actually lots that needs to be calibrated.
There's the tool head offset calibration. If this is off I would imagine lots of tool crashes would occur as the offsets between the nozzles on each tool head would be incorrect. This would cause the nozzle to crash into the part on multi color or multi material parts. It could also lead to poor print quality as the layers between heads would not line up. This calibration needs to be repeated every time a nozzle is changed, and you have to make sure the nozzles are completely clean, no residue at all or this calibration will be incorrect.
There's also the dock calibration. If this is done wrong, or if the dock is loose, this will cause lots of tool head crashes, and layer shifts.
So I suspect these are good candidates for not being done correctly, or not done when needed, like when a nozzle change is done.
So your comment shows that most users are not familiar with the machine, and don't know how to use it properly. It also explains why some have no issues and some have many.
RE: As of 6.4.0, the XL still crashes toolheads into one another. It is inexcusable.
I was expecting that exact same comments. I just ask you to temper your judgement.
Issues occurs also when printing monomaterial parts. Which I try to do 95% of the time.
Monomaterial printing don't need "tool head offset calibration".
Dock calibration is good here and is less crucial for monomaterial printing. I never noticed a badly locked tool.
Tool falling on the plate is because of huge layer shifting bringing the tool mount going on the far right of the rail. That unlocks the tool. At my surprise there is no safety against that.
RE: As of 6.4.0, the XL still crashes toolheads into one another. It is inexcusable.
Vous êtes vraiment le dieu de l impression, par contre visiblement vous avez échappé a l éducation.
Bref. Je peux vous assurer que cette version a de nombreux bog et oui il es possible que certains des problèmes soient humains.
Un exemple très représentatif qui n'a absolument rien à voir avec des réglages. Effectué la calibration du pas a pas en phase et vous obtiendrez des résultats catastrophiques par rapport a la version précédente.
RE: As of 6.4.0, the XL still crashes toolheads into one another. It is inexcusable.
Vous êtes vraiment le dieu de l impression, par contre visiblement vous avez échappé a l éducation.
Bref. Je peux vous assurer que cette version a de nombreux bog et oui il es possible que certains des problèmes soient humains.
Un exemple très représentatif qui n'a absolument rien à voir avec des réglages. Effectué la calibration du pas a pas en phase et vous obtiendrez des résultats catastrophiques par rapport a la version précédente.
Well my poor upbringing somehow allows me to print on a daily basis without issue.
This leads me to understand that the issue that you are having is not happening to everyone.
So I'm not sure what these bugs are. It seems to be working fine.
RE: As of 6.4.0, the XL still crashes toolheads into one another. It is inexcusable.
Is it possible the problems were having isn't really related to the firmware, but just the age/use of the machine...
I have 243 days on my machine...
Tool 1, 22.8km, 27579 tool changes
Tool 2, 8.5km, 19192 tool changes
Tool 3, 2.9km, 11335 tool changes
Tool 4, 5.9km, 8747 tool changes
Tool 5, 1.6km, 3279 tool changes
Perhaps the issue is actually the tool-head connector which adds anomalies such as: https://forum.prusa3d.com/forum/original-prusa-xl-tool-changer-hardware-firmware-and-software-help/toolhead-led-flickering/#post-778393
RE: As of 6.4.0, the XL still crashes toolheads into one another. It is inexcusable.
Very early XL, factory built. Idlers all replaced. I replaced all five extruder cable connectors with the taller version. Otherwise stock standard. Have been printing a while after cable connectors on FW 6.2.6. No problems.
Last night upgraded to fw 6.4.0. Even during calibration there was head crash confusion. This was after the tool head offset calibration.
Now back on 6.2.6, after calibration, print runs smoothly.
RE: As of 6.4.0, the XL still crashes toolheads into one another. It is inexcusable.
When you say calibrating are you referring to the homing at the start of a print?
RE: As of 6.4.0, the XL still crashes toolheads into one another. It is inexcusable.
This was during calibration, still in process with calibration. Print not yet started.
TH2 attempted to return to dock and made harsh noises, finally managed to dock. Then trying to undock TH1, it made some more harsh noises, unable to remove from dock. The gantry then stopped in TH1 loading position.
An important note, perhaps, is that I tried to early terminate the gearbox calibration - perhaps I took a wrong turn here.
After loading fw 6.2.6 all works, I completed the full calibration and just completed a small test print.
When you say calibrating are you referring to the homing at the start of a print?
RE: As of 6.4.0, the XL still crashes toolheads into one another. It is inexcusable.
This was during calibration, still in process with calibration. Print not yet started.
TH2 attempted to return to dock and made harsh noises, finally managed to dock. Then trying to undock TH1, it made some more harsh noises, unable to remove from dock. The gantry then stopped in TH1 loading position.
An important note, perhaps, is that I tried to early terminate the gearbox calibration - perhaps I took a wrong turn here.
After loading fw 6.2.6 all works, I completed the full calibration and just completed a small test print.
When you say calibrating are you referring to the homing at the start of a print?
Out of curiosity why did you recalibrate? Updating the firmware doesn't require you to recalibrate.
RE: As of 6.4.0, the XL still crashes toolheads into one another. It is inexcusable.
Recalibration after firmware update: I do this as a matter of course on all calibrations except docking [which is a pain]. It makes sense if you consider a firmware upgrade as a change to an embedded software - it changes the behaviour of the hardware. An obvious example is when input shaping became part of the firmware - you have to calibrate to get the effect.
The other reason I did it now was because I changed the cable connectors (dwarf board?) in December, on the extruders from the original smaller to now, the taller more rigid versions. Before this change I only had one toolhead working - the rest failed because of cable connector failure. So I am still in the "Check the tool head offset calibration" because this failed on me after the cable changes.
RE: As of 6.4.0, the XL still crashes toolheads into one another. It is inexcusable.
Recalibration after firmware update: I do this as a matter of course on all calibrations except docking [which is a pain]. It makes sense if you consider a firmware upgrade as a change to an embedded software - it changes the behaviour of the hardware. An obvious example is when input shaping became part of the firmware - you have to calibrate to get the effect.
The other reason I did it now was because I changed the cable connectors (dwarf board?) in December, on the extruders from the original smaller to now, the taller more rigid versions. Before this change I only had one toolhead working - the rest failed because of cable connector failure. So I am still in the "Check the tool head offset calibration" because this failed on me after the cable changes.
I have never recalibrated except for when I changed nozzles. 100% not necessary after a firmware update. The locations of the docks and the nozzle offset didn't change.
I suspect your crashes were related to stopping mid calibration. Likely letting the printer re-home x and y would have got it back to normal.
The Nextruder gearbox calibration is only necessary if you've disassembled the Nextruder gearbox.
I think your problems might be self induced.
RE: As of 6.4.0, the XL still crashes toolheads into one another. It is inexcusable.
Quite possible. Thanks.