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Any good belt tension adjuster for the y-axis for i3MK3S+?  

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prusanewuser
(@prusanewuser)
Prominent Member
Any good belt tension adjuster for the y-axis for i3MK3S+?

Hi, I upgraded from i3MK3S to i3MK3S+ when it came out. Sometimes I have to adjust the y-axis belt and it is annoying that I have to lift up the heavy machine with one hand while adjusting the belt tension at the same time. Is there some kind of belt tension adjuster that I can install on the i3MK3S+ so that I can adjust the tension of the y-axis belt while the machine is sitting on the desk without me having to lift the machine or flip it over?

Posted : 22/12/2021 2:25 am
tentaclejoe
(@tentaclejoe)
Member
RE: Any good belt tension adjuster for the y-axis for i3MK3S+?

I use this:

https://www.prusaprinters.org/prints/46639-tension-meter-for-the-gt2-belts-of-i3-mk3s-or-prus

Posted : 22/12/2021 2:55 am
prusanewuser
(@prusanewuser)
Prominent Member
Topic starter answered:
RE: Any good belt tension adjuster for the y-axis for i3MK3S+?

Thank you. I have this already. I am looking for something to adjust the y-axis belt tension rather than to check the tension.

Posted : 22/12/2021 4:04 am
tentaclejoe
(@tentaclejoe)
Member
RE: Any good belt tension adjuster for the y-axis for i3MK3S+?

You mean a wrench? 

 

Posted : 22/12/2021 4:11 am
Robin liked
BogdanH
(@bogdanh)
Honorable Member
RE: Any good belt tension adjuster for the y-axis for i3MK3S+?

There exist more user friendly solutions for Y-axis belt tension regulation. Two of them are here and here.

[Mini+] [MK3S+BEAR]

Posted : 22/12/2021 9:16 am
prusanewuser
(@prusanewuser)
Prominent Member
Topic starter answered:
RE:

 

Posted by: @bogdanh

There exist more user friendly solutions for Y-axis belt tension regulation. Two of them are here and here.

 

Thank you. Have you tried both? Which is better for i3MK3S+?

In the latter option, what is the different between

idler_frame_mount_stock_idler.stl,

idler_frame_mount_gt2-20.stl and

idler_frame_mount_gt2-16.stl

No idea what gt2-20 and gt2-16 are. Which one should I use for the i3MK3S+?

Posted : 24/12/2021 5:34 pm
Larry Tener
(@larry-tener)
Trusted Member
RE: Any good belt tension adjuster for the y-axis for i3MK3S+?

I have been using the one from Thingiverse for some time on several machines and it works very well, you will need to go back to the MK3 belt mount for the bed as it runs truer to the motor pulls.

L.

Posted : 27/12/2021 2:34 pm
prusanewuser
(@prusanewuser)
Prominent Member
Topic starter answered:
RE: Any good belt tension adjuster for the y-axis for i3MK3S+?

Thanks. Do you mean use these two parts on my i3MK3S+?

y-belt-idler.stl found in: i3 MK3 Printable parts by Prusa Research | Download free STL model | PrusaPrinters

and idler_frame_mount_stock_idler.stl from Thingiverse?

 

 

Posted : 27/12/2021 3:35 pm
Larry Tener
(@larry-tener)
Trusted Member
RE: Any good belt tension adjuster for the y-axis for i3MK3S+?

Yep, they work great and you can adjust the belt without doing anything but maybe pulling the printer to the edge of the bench so you can reach the adjusting screw easily.

Posted : 27/12/2021 3:46 pm
prusanewuser
(@prusanewuser)
Prominent Member
Topic starter answered:
RE: Any good belt tension adjuster for the y-axis for i3MK3S+?

Thanks. Do those stock Prusa self-tests and calibrations work accurately after the modifications?

Posted : 27/12/2021 8:27 pm
Larry Tener
(@larry-tener)
Trusted Member
RE: Any good belt tension adjuster for the y-axis for i3MK3S+?

Yes, and the little print it yourself belt tester works great with them. 

L.

Posted : 27/12/2021 8:38 pm
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