XL 5-Head Dock Position Calibration Issue (Semi-Assembled)
After completing the build of my 5 Head XL, I proceeded to the "7. First Run" chapter in the assembly manual using the Wizard function - Dock Position Calibration. Heads 1-3 calibrated successfully, however, heads 4 and 5 returned home during the final step of the calibration and made a clunking sound when attempting to dock on the tool changer, and left the head somewhat skewed on the changer and partially unlocked. Neither head parked properly and failed to calibrate.
I reached out to Prusa support and shared the same, however, the support person had no additional insight except that perhaps the magnets used on the tool changer and tool may not have been installed properly at the factory and are creating a polarization issue between the two. I checked all 5 heads and everything appeared to be installed properly by the Prusa team. The conversation with Prusa support ended with "I will get back to you after I speak with the developers". It has been three days since this conversation and I have not yet heard back.
Have any of you experienced a similar issue? If so, what steps did you take to resolve it?
RE: XL 5-Head Dock Position Calibration Issue (Semi-Assembled)
I have to admit, my calibrations all went fine, but now that i am slowly starting to use all extruders i had some more "clonks" as well. I recalibrated the docks and then it worked fine.
Regarding the magnets, there is a reddit thread where somebody identified a faulty installed magnet. There was a lot of troubleshooting, maybe you can benefit from it.
RE: XL 5-Head Dock Position Calibration Issue (Semi-Assembled)
Great. That is the exact same problem I got. I just mine 1/5/2024 and I am just moving along with 3 heads to test printing.
Where can I start to find how to remedy this
RE: XL 5-Head Dock Position Calibration Issue (Semi-Assembled)
After patiently waiting for the Prusa support team to get back to me over a couple of days, I decided to disassemble all 5 extruders and reassemble them to see if that may help in the interim. In doing so, I noticed that the docks for 4 & 5 had a slight angle to them, in comparison to the docks for 1-3. As I remounted them I made sure all 5 docks were aligned and reran the dock position calibration wizard. All 5 extruders calibrated perfectly as a result!
I'm no expert, but I believe the mating area of the docks could use a redesign, as there is simply too much of an opportunity to skew them against the extruded channel while tightening the screws, even while placing a lot of focus on getting them as straight as possible.
RE: XL 5-Head Dock Position Calibration Issue (Semi-Assembled)
Hi
I also have a docking problem after all the tools worked good for some time.
I was able to recalibrate tools 3,4 and 5 (took few few attempts) but tools 1 and 2 docking calibration is unsuccessful over and over.
any ideas?
thanks
RE: XL 5-Head Dock Position Calibration Issue (Semi-Assembled)
Hi
I also have a docking problem after all the tools worked good for some time.
I was able to recalibrate tools 3,4 and 5 (took few few attempts) but tools 1 and 2 docking calibration is unsuccessful over and over.any ideas?
thanks
I'm getting similar. Wouldn't calibrate 3, removed everything back there to slide it as far left as I could. Tried again, and now 1 won't calibrate. I tried other heads and they did, but 1 is still giving me issues. I'll keep disassembling and reassembling until this crappy wrench finally give out I guess.
Did you get it working right? I hope so, it's been a a bit!
RE: XL 5-Head Dock Position Calibration Issue (Semi-Assembled)
I've heard of others with loose docks. I used 243 Loctite on the screws and used the universal wrench as a cheater bar to make sure the docks don't come loose. I also removed the honeycomb metal piece to get easier access to the screws.
So far no issues.
RE: XL 5-Head Dock Position Calibration Issue (Semi-Assembled)
used the universal wrench as a cheater bar to make sure the docks don't come loose
How so? I'm trying to picture it but can't.
I have removed the honeycomb off as well, there would be no way for me to move that bar any other way. That I know of.
I'll give it another try in the morning. It looks like there's a gap, but it is as butted up and tightened as I can get it. Maybe I'm askew ever so slightly?
I'll get there. Eventually.
RE:
used the universal wrench as a cheater bar to make sure the docks don't come loose
How so? I'm trying to picture it but can't.
I have removed the honeycomb off as well, there would be no way for me to move that bar any other way. That I know of.
I'll give it another try in the morning. It looks like there's a gap, but it is as butted up and tightened as I can get it. Maybe I'm askew ever so slightly?
I'll get there. Eventually.
Make sure you don't use a ball end hex wrench either.
