motor shaft coupler too flexible? May 07, 2015 04:24AM |
Registered: 8 years ago Posts: 5,232 |
Re: motor shaft coupler too flexible? May 07, 2015 05:55AM |
Registered: 9 years ago Posts: 977 |
Re: motor shaft coupler too flexible? May 07, 2015 06:30PM |
Registered: 10 years ago Posts: 581 |
Re: motor shaft coupler too flexible? May 08, 2015 01:46AM |
Registered: 9 years ago Posts: 977 |
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3dkarma
Stick a ball bearing down the hole. Stops the compression and keeps the flexibility.
Re: motor shaft coupler too flexible? May 08, 2015 02:45AM |
Registered: 8 years ago Posts: 5,232 |
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AndrewBCN
Ditto here. You can try to print with and without a ball bearing inside the coupler and report on any observed differences. Again personally I doubt there will be any.
Other things you can try that I personally doubt will make any difference in print quality (or at least any measurable/observable improvement along the Z-axis):
- Wrap the coupler in duct tape (hey, duct tape usually helps, doesn't it?).
- Put magnets around the coupler.
- Arrange stones around the 3D printer, preferably in the same pattern as Stonehenge.
- Paint the coupler in pink, Hello Kitty style.
Re: motor shaft coupler too flexible? May 08, 2015 02:53AM |
Registered: 9 years ago Posts: 977 |
Re: motor shaft coupler too flexible? May 08, 2015 03:32AM |
Registered: 8 years ago Posts: 5,232 |
Quote
3dkarma
Stick a ball bearing down the hole. Stops the compression and keeps the flexibility.
Re: motor shaft coupler too flexible? May 08, 2015 07:13AM |
Registered: 11 years ago Posts: 5,780 |
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o_lampe
Hi guys,
I got these couplings with my prusa i3 kit.
I was surprised how soft they were and how easy I could compress them vertically.
Now I´m wondering, if that would reduce z-axis accuracy?
Imagine your extruder is on the far left side, where also the x-stepper is.
The whole weight would compress the left coupling a bit.
Printing in the center or even on the right side, would compress the right coupling more and more, expanding the left coupling at the same time.
To overcome the vertical compression, my idea is to insert a silikon tube ( 4mm AD ) between the motorshaft and the M5 rod. Now the weight of the x-carrier and extruder rests on the motorshaft and not on the coupling.
This way, the compression would be dampened a lot, while the side-to-side flexibility of the coupling stays the same.
What do you think?
Sorry, if someone has posted that before.
Olaf
Re: motor shaft coupler too flexible? May 09, 2015 04:24AM |
Registered: 8 years ago Posts: 5,232 |