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X axis belt rubbing  

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Cody
 Cody
(@cody)
Active Member
X axis belt rubbing

Hey everyone so I recently received the MK2s kit and put it together. I'm having one of many issues but I'll start with this one first. So the x axis belt is rubbing against the PETG near the motor. I did a few searches and found a few things about it rubbing near the idler but nothing about it doing it near the motor. So as a temp fix for now I've added a washer to each screw to push the motor back some and I also didn't push the belt into the holder/extruder all the way. I'm basically trying to shift it as far to the left as possible. I also have the belt pretty loose I believe the rule is you want to be able to 'pluck it' and mine doesn't really do that. Everything seems straight and the idler is spinning fine, did I receive a bad part? I'll attach some photos and a short video (the video really shows off what's happening.

Any advise would be appreciated. Thanks!

https://ibb.co/eDq7OT
https://ibb.co/juH7q8
https://ibb.co/hvX7q8

[youtube] [/youtube]

Posted : 05/06/2018 2:49 pm
darKing
(@darking)
Trusted Member
Re: X axis belt rubbing

Hi Cody, read step 13 again and look closely at the pulley, then you'll know. 🙂

https://manual.prusa3d.com/Guide/3.+X-axis+assembly/299?lang=en#s5115

Posted : 05/06/2018 4:20 pm
Cody
 Cody
(@cody)
Active Member
Topic starter answered:
Re: X axis belt rubbing


Hi Cody, read step 13 again and look closely at the pulley, then you'll know. 🙂

https://manual.prusa3d.com/Guide/3.+X-axis+assembly/299?lang=en#s5115

Oh my god... I'm so dumb thank you! Now I need to verify my y axis as well now lol. In case this helps anyone in the future my pully gear was backwards 😆

Thanks again!!!

Posted : 05/06/2018 4:41 pm
darKing
(@darking)
Trusted Member
Re: X axis belt rubbing

🙂 On the Y-Axis it's the other way around. So if you assemled your Y-Axis exactly the same, it's correct there.

Posted : 05/06/2018 4:45 pm
Cody
 Cody
(@cody)
Active Member
Topic starter answered:
Re: X axis belt rubbing


🙂 On the Y-Axis it's the other way around. So if you assemled your Y-Axis exactly the same, it's correct there.

Okay then I think I did it right I'll check later to verify. Thanks again for the help!

Posted : 05/06/2018 4:49 pm
coopster
(@coopster)
Eminent Member
Re: X axis belt rubbing

what about if the belt is rubbing on opposite side ? (non motor side) also my belt is not always flat when printing (perpendicular to the board) it will twist slightly especially when the extruder is moving toward the motor. not sure if that is normal (ill post some pics later today)

Posted : 16/08/2018 8:29 pm
BillC
(@billc)
Reputable Member
Re: X axis belt rubbing


what about if the belt is rubbing on opposite side ? (non motor side) also my belt is not always flat when printing (perpendicular to the board) it will twist slightly especially when the extruder is moving toward the motor. not sure if that is normal (ill post some pics later today)

Maybe worth checking your pulley orientation too. Just to eliminate that as the cause of your problem. Toothed end is closest to the motor?

Bill
Tagaytay City, Philippines
Founder member of Philippines Prusa Printer Owners FB Group
Sponsor Pillars of God Academy in Bacoor

Posted : 17/08/2018 5:20 am
coopster
(@coopster)
Eminent Member
Re: X axis belt rubbing

the pully is spaced as per the instructions … but you can see by the photos the belt hits the mount and is not straight...

im going to try and "straightent " the y axis to see if that helps

Posted : 17/08/2018 5:59 am
PJR
 PJR
(@pjr)
Antient Member Moderator
Re: X axis belt rubbing

As mentioned previously by Bill, the toothed end should be towards the motor, so you have it wrong 🙁

Peter

Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…

Posted : 17/08/2018 9:57 am
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