First calibration issue drags first head on the bed Step 20-21
I must be missing something here on an XL5 semi-assembled. During the toolset offset calibration. The wizard instructs you to put a steel sheet onto the bed and then the 1st head is selected and drawn out to the far left edge of the bed and the bed is raised up and the 1st touches the bed and then is raised up and sent back to the docu the toolhead, but it contacts the left rear of the bed and the extrusion scratching both. The toolhead did not appear to touch when it was pulled out but I'm looking for an idea of what to do, as I'm missing something here.
RE: First calibration issue drags first head on the bed Step 20-21
Check that the frame is square. Using a torch check where you connected all the extrusions, making sure that they are all seated correctly with no gaps. This is very important.
RE: First calibration issue drags first head on the bed Step 20-21
The tool doesn't move up/down at all on the XL. Sounds like your nozzle isn't properly installed and it slipped/fell enough to contact things.
XL-5T, MK3S MMU3 || Printing with multiple nozzle-sizes: Official Guide, Unofficial(old) || PrusaSlicer Fork || Other advanced slicer tactics || TPU || HF Nozzles
RE: First calibration issue drags first head on the bed Step 20-21
I think this may be a bug of sorts with the firmware. After I completed the assembly I noticed a bit of a squeak in the Z-axis, so I put some lubricant on it and put it through its range of motion a few times. This resolved the squeak, but it lets you move it to -1mm... I accidentally left it there and then it dragged the nozzle right across the bed in the next step. I haven't run into the issue since then keeping in mind never to leave the Z at -1mm but I've got a nice gouge across my build plate to remind me.
RE: First calibration issue drags first head on the bed Step 20-21
can you take a picture of the print bed with the z axis all the way up and manually connect the print head and maneuver it over the sheet or at least to the edge? If it hits the sheet, dont force it to damage it any worse. Kind of give everyone a reference to go by? A few pictures go a long way so we can see whats going on.
RE: First calibration issue drags first head on the bed Step 20-21
I haven't able to get a good picture but it's fairly easy to see for yourself using the controls. Pick a tool and use the controls to move it to the center of the x-axis, then move the y-axis forward until the nozzle is just off the edge of the bed. Then move the z-axis to 0mm, you can see the tip of the nozzle is in plane with the bed surface. Moving the z-axis to -1mm, you can see the tip is below the plane of the bed surface.
Just remember to move the z-axis back above the bed if you look at this!
Personally I don't think the firmware should allow the x/y axis to move when the bed is below 0mm.
RE: First calibration issue drags first head on the bed Step 20-21
I have been having some first layer issues my self as of late. Seemingly after is swapped the standard nozzles to obxidean nozzles 0.4 and 0.6. ( in my experience it took a bit to much force to screw them in)
however after having a fun chat with the help desk. They shared with me that the grub screw would ideally be tightened with 0,25Nm. So i will get my self a nice torque hex screwdriver and try again.
but i thought it would be nice to share this peace of info with you all.
Cheers