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Loud Vibrations - Possible Solution?  

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malcinator
(@malcinator)
Trusted Member
Loud Vibrations - Possible Solution?

Sorry to start a new thread but I have a loud vibration noise when the printer is set to its High Power Mode. The noise is not related to the bed although there is some noise coming from there. I have taken a look at my setup and this is what I have found...

When I run the calibration, which I have done a few times now I have noticed a loud vibration coming from what I though was the bed. It turns out that the vibration is coming from the X Axis and the transmitting this up through the right lead screw to the top of the printer. This is also the case for the left side but it's more noticeable on the right. I'm guessing here as I haven't tried as yet to slacken off the two locking screws on the right which are also on the right side which may or may not be too tight?

If I place a piece of thin rubber between the lead screw and the plastic support the noise almost stops. The problem now is getting the insulating material to stay in place as it unscrews itself with the rotation of the lead screw rods

Opublikowany : 19/10/2016 8:18 am
Omikron
(@omikron)
Estimable Member
Re: Loud Vibrations - Possible Solution?

Yes, this is a pretty common problem. The best solution would be new z stops with a captured bearing, but if someone has a better cheap solution I would be interested as well.

My main curiosity is why the hole is designed to be so wide. It seems like if it didn't need to have so much play PR would not have designed it that way.

Opublikowany : 19/10/2016 12:59 pm
malcinator
(@malcinator)
Trusted Member
Topic starter answered:
Re: Loud Vibrations - Possible Solution?

It's certainly got me thinking. If I can find an old pair of rubber gloves I will try snipping of the little finger tips and putting them on the ends. My only other though is to pop some heat shrink tube on the ends but I don't have any to hand of that diameter. I have tried wedging a piece down the side that touches and that works a treat.

I wonder if a printed end cap would also work.....?

Any other ideas?

Opublikowany : 19/10/2016 1:23 pm
simon.p
(@simon-p)
Trusted Member
Re: Loud Vibrations - Possible Solution?

Yes, this is a pretty common problem. The best solution would be new z stops with a captured bearing, but if someone has a better cheap solution I would be interested as well.

My main curiosity is why the hole is designed to be so wide. It seems like if it didn't need to have so much play PR would not have designed it that way.

Because the Z-screw is supposed to float and not touch anything.

EDIT:

Probably to allow it to self align. The Z-screw travels within the hole on my printer depending on the height of the X-carriage.

Opublikowany : 19/10/2016 7:43 pm
David T.
(@david-t)
Noble Member
Re: Loud Vibrations - Possible Solution?

If the frame is properly assembled, Z screw should not travel anywhere.

Opublikowany : 19/10/2016 8:12 pm
Omikron
(@omikron)
Estimable Member
Re: Loud Vibrations - Possible Solution?

If the frame is properly assembled, Z screw should not travel anywhere.

I am inclined to agree, but PR support seems to disagree. I've gone back and forth with them on it and as near as I can tell it's considered to be within tolerance.

They advise there should be no impact on print quality. While the difference may be negligible, I don't know if it has *no* impact on print quality. I would be curious to measure the differences and work out the math to see what the difference is, and decide if that is something that is truly negligible.

All that said, I think it's important to remember that this is not a 3K+ printer, and I think that perhaps there are some reasonable limitations to what one can expect in terms of quality an performance with this printer.

Opublikowany : 20/10/2016 9:38 pm
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