christian.b13
Posts: 42
Joined: Oct 09, 2017 12:49 pm
Topics answered: 1
Location: Germany
Contact: Send private message

Is this Normal ?

Sep 02, 2018 10:32 pm

So... after 3 days of tweaking in order to get rid of an annoying rattling noise...

1) i removed the rubber feet
2) checked all screws
3) tightened belts... now X is on 280 ( it was 288 before) and Y is on 263 it was on 292 before.
4) tried to move all the parts per hand to see if i can replicate the noise..i couldnt.

Howerver i noticed this https://drive.google.com/file/d/1sxrQI3 ... IqbSU/view

Prusa Support says it is normal... but i find it weird that it does this more to the right side than the left side...

the printer has been printing perfectly ( i however have a slightly warped bed...i am getting a replacment...until the replacement comes i am using the mesh level correction in the frimaware...its works good)...

I have no idea where does this rattle comes from... definitly not PSU...it is similar to this noise: https://www.youtube.com/watch?v=mq7Ppf4FvdM

it does it when printing lik ein this video, or when printing fast on corners or when the Z axis moves Downwards after Going all the way up in a calibration action...

User avatar
Bigdogbro1
Posts: 236
Joined: Nov 10, 2017 9:26 pm
Topics answered: 1
Location: Hell, Michigan U.S.A.
Contact: Send private message Website

Re: Is this Normal ?

Sep 05, 2018 1:20 pm

If I seen the video correctly it looked like the lead screw was moving inside the nut. My newest MK3 unit is the same way. The backlash is terrible but when the weight of the upper gantry holds the nut down onto the lead screw threads the backlash is canceled out if the Z-axis bearings slide freely.
MK3 Kit, Designed, built 4x4 CNC Plasma Cutting Table, Motorcycles

Bigdogbro's Adventures
http://www.youtube.com/channel/UC5djrxBeeOKB9_6rHnn6G8A

christian.b13
Posts: 42
Joined: Oct 09, 2017 12:49 pm
Topics answered: 1
Location: Germany
Contact: Send private message

Re: Is this Normal ?

Sep 07, 2018 11:49 am

I got trapezoidal nuts replacement...and the new one is waaaay better...just a really really slight backlash in Z direction but this normal...i dont have the X/Y backlash anymore

torsten.r2
Posts: 1
Joined: May 16, 2018 12:34 pm
Contact: Send private message

Re: Is this Normal ?

Sep 16, 2018 2:31 pm

Hi Christian,

I just realized that one of the trapezoidal nuts is not going as easy as the other one. You wrote that you got a replacement one. Did you write Prusa for that or how did you get it?

Thanks,
Torsten

christian.b13
Posts: 42
Joined: Oct 09, 2017 12:49 pm
Topics answered: 1
Location: Germany
Contact: Send private message

Re: Is this Normal ?

Sep 16, 2018 2:36 pm

Yes i contacted them via chat...

Return to “Assembly and first prints troubleshooting”

Who is online

Users browsing this forum: joseph.k2 and 3 guests