Y Endstop Switch Failure
Hello!
My Mk2 kit went together pretty smoothly, and I have been printing about a week. Learning a lot! The canned gcodes I did printed great (logo, whistle, frog). Switched materials to ABS and re-sliced and those worked great too. My son made a couple simple models for games he is making and they worked ok too.
Thursday, On the initial 9-point cal for a print, the y-axis did not trip the endstop, and the motor kept trying for a few seconds. This ended up breaking the plastic part that the endstop mounts to.
Upon investigation, the endstop switch itself failed. There is no continuity between the tabs of the switch where the wires mount. When I activate the switch there is still no continuity. Sometimes, if I wiggle it a little I get a brief bit, then it goes away. The x-axis endstop shows strong continuity until the switch is made.
I can find a replacement locally I think. I can also fuse the broken part back together and hopefully print a replacement. That part will be a chore to replace though.
No real question, just wanted to have this in the search queue for anyone else with a similar problem.
DJ Roberts
Re: Y Endstop Switch Failure
If you can crack the switch open and take photos there may a quick fix.
Best to get a replacement but to get you back up an running, maybe you could add a little bit of solder to the metal parts that flex so that they make contact easier.
Re: Y Endstop Switch Failure
there are a few guys here, that had at least the problem that the part that holds the y-endswitch broke off from the y-motor holder.
but i haven't heard (or read) of somebody here, who had a defective switch.
dem inscheniör is' nix zu schwör...
Re: Y Endstop Switch Failure
Replaced the switch, recalibrated, and am printing again.
During the re-calibration process, I decided to try to fix my skew a bit. Managed to get the 10mm rod up out of the frame a little. That showed itself during the xyz calibration as the print nozzle hitting the printbed on the 4th point of "Improving Calibration" (the first four point process went smoothly, as did the first three points of the Improve Calibration part). Got that fixed, and got printing again.
DJ Roberts
Re: Y Endstop Switch Failure
...Managed to get the 10mm rod up out of the frame a little. ...
DJ Roberts
usually both 10mm threaded rods should sit completely down the frame to get a perpendicular alignment between y-axis and the rest (z & x).
are your rods completely pressed down into the corner parts ?
❓
dem inscheniör is' nix zu schwör...
Re: Y Endstop Switch Failure
Hey Jeff,
I had made sure they were both settled in as far as they could go on the first build. I suspect the power supply side one shifted when I loosened its jam-nuts to fix the xy skew message I had on calibration adjustment. When I corrected that, I made sure they were both all the way seated. Even got the congratulations message on my next xyz calibration!
Just about to print off a few of your 75mm squares because I think my live z adjustment is a bit off.
Thanks for your input on this list!
DJ Roberts
Re: Y Endstop Switch Failure
Had similar symptoms as duane.r at the beginning of the thread.
The endstop switch didn´t stop the Y axis, the motor kept trying and finally an error message was shown. Luckily no plastic was broken.
This happened during fourth print.
The wiring was OK same as the switch was (luckily I had a multimeter). With manual push the switch was operated as it should be. No obvious reason...
It took me few loooooong minutes to discover the cause: the exceeding end of the belt was left unnecessarily long...
Due to the remaining end of the Y axis belt was too long it sometimes got between the pulley of the tensioner and the belt itself. The motor then was not strong enough to overcome the resistance of double belt on the pulley (by hand I was able to push the switch with slightly encreased force).
The solution was to trim the loose end of the belt by 1cm...
Easy solution, pretty long way to find it 🙂
Maybe it helps to someone...