RE: Failed Y-calibration of a new CoreOne
Update some 2.5 months later.
I did some maintenance on my printer, just cleaning, lubrication and checked the belt tensions, they have dropped to 74 Hz! so arrived new set at 107Hz, I adjusted down to 90Hz and now after the printer has been in use they are at 74Hz.
I didn't expect this much stretch!
I have adjusted the belts back up to 86Hz.
You may want to check yours.
Normal people believe that if it is not broke, do not fix it. Engineers believe that if it is not broke, it does not have enough features yet.
RE: Failed Y-calibration of a new CoreOne
I believe there is a step in the assbly manual for the kits to check for binding on this axis. One of the comments was a string of people getting caught by the cable from the filament sensor.
RE: Failed Y-calibration of a new CoreOne
It’s quite a long belt. If it stretches just a bit it’s enough to drop frequency for this much. And, to be honest it’s to be expected. Every new thing does that. In fact, i think tension check should really be performed regularly, i’d say every couple of months or so. It’s so much easier to readjust tension than on mk4 that it really shouldn’t be a problem.
RE: Failed Y-calibration of a new CoreOne
Hello,
I got the same problem on my Core One kit ... Finally, I figured out that the Y motor pulley was upside down ... X was great because I double checked it and then ... do the same reverse mounting on the Y 😶
RE: Failed Y-calibration of a new CoreOne
i also had the pulley on the x-axis inverted, thank you to all the posters! I was able to eventually get the X and Y axis checks to pass (the belt tuner app still only works once in thirty tries). I am currently struggling to get it to load filament without going into the same sort of spastic Y-axis check.
RE: Failed Y-calibration of a new CoreOne
I Just did my conversion and also ran into this Problem, after bending the x Axis straight I still wasnt able to get it done. Bit this thred helpes a lot.
My other Problem was that one of the belts wasn't on the teeth of the Motor, It was the left Motor in the Back, so Check both Motors If the belts are running smoothly in there. Also If you fully loosen your belts this Problem could also happen. It's noe running smoothly.
RE: Failed Y-calibration of a new CoreOne
So I had this issue as well. It wasn't a cable problem, my belt tension tuning was correct and I even checked it against another sound analyzing app. Mine would go to the front right corner, then do a series of touches to the front, the right side and a diagonal bumping back and forth. I made sure all the bolts were tight and it wasn't ramming anything and just told it to print. Seems to work well. I printed a quality check with overhangs and critical dimensions to measure and everything seems great. The only thing I can think of is if something is out-of-square somewhere in the frame BUT IF THE CALIBRATION CAN TELL ME THAT IT SHOULD BE GIVEN AS A RESULT OF THE TEST.
If you calibration software checks something and it fails, it should report to the user what failed and why! Who thought it was a good idea to have the machine return NO INFORMATION to the user?! When I hear "Y-axis calibration failed" I think of: distance, endstop sensors not triggering, a problem with the motor, a problem with some sort of motion controller, an error in a sensor or a feedback system.
TELL
US
WHY
IT FAILED
Please.
RE: Failed Y-calibration of a new CoreOne
i also had the pulley on the x-axis inverted, thank you to all the posters! I was able to eventually get the X and Y axis checks to pass (the belt tuner app still only works once in thirty tries). I am currently struggling to get it to load filament without going into the same sort of spastic Y-axis check.
I had the same problem, were the instructions incorrect at some point? I actually remember catching that I'd put the Y-axis pulley on upside-down, it's just weird that I still made that exact same mistake.
RE: Failed Y-calibration of a new CoreOne
I had the same problem, were the instructions incorrect at some point?
No, I am pretty sure they were correct right from the start. My Core One kit was pretty early in batch 1 (shipped April 1st) and the instructions were fine. I think it's probably due to assembling the Y pulley "on autopilot", assuming that it's the same as the X pulley which was mounted in the step just before.
RE: Failed Y-calibration of a new CoreOne
The instructions are exactly correct, but it didn't match with my intuition. The worst part is that after seeing the other post, and wanting to investigate, I tore down that motor, saw I had the problem, and remounted the pulley in exactly the same way as I had it previously! After that, I made myself match the pulley & motor to the picture, to make sure that I didn't fool myself.
RE: Failed Y-calibration of a new CoreOne
I had the same problem, were the instructions incorrect at some point?
No, I am pretty sure they were correct right from the start. My Core One kit was pretty early in batch 1 (shipped April 1st) and the instructions were fine. I think it's probably due to assembling the Y pulley "on autopilot", assuming that it's the same as the X pulley which was mounted in the step just before.
Since the instructions are still on v1.0, that sounds reasonable. Interestingly I managed to get the spacing correct but got both cogs upside-down from the images (fixing one immediately and the other at the end of the build during calibration). That step must the the 165th step (I counted 330 actual steps, correct me if I'm off), as I feel like it's cursed.
RE: Failed Y-calibration of a new CoreOne
Same with me: 2 broken screws and 2 times reassembled already finished printer to the x/y axis because of the failed tensioning process. There is still some work for Prusa to deliver good kits of the Core One!