1 (edited by chente922 2015-01-22 00:18:35)

Topic: Z Wobble Fix for SD3 & 4

A quick fix I'm working on for my own Solidoodle 3 & 4. I'm still testing but I believe it fixed z wobble problems by 50-60% at least for my SD3. Next step is to add the firmware fix, if anyone can facilitate me instructions for the firmware fix I would be grateful.

Please print, test and let me know how it goes. Suggestions are always welcome.

Here's the link to Thingiverse including the nuts and bolts used.
http://www.thingiverse.com/thing:646436

2

Re: Z Wobble Fix for SD3 & 4

Is that just a regular nut?
Still confused about this, it's called "anti-backlash nut" because it's a specialized nut, or just because it's used here for anti-backlash purpose?

Solidoodle 4

3

Re: Z Wobble Fix for SD3 & 4

It can help with wobble if it lets the nut slide in X and Y without any slop in Z.  I don't know if that is the case with this.  It relies on a tight press fit of the nut rather than trapping it, which would be better.

4

Re: Z Wobble Fix for SD3 & 4

so just a regular nut?

Solidoodle 4

5

Re: Z Wobble Fix for SD3 & 4

While I appreciate your efforts and always encourage new ideas and fixes.  I want to inform you that this issue has been covered quite possibly more than any other.  So just a friendly suggestion to have a search and discover the multitude of solutions for this.  My personal favorite is the Well nut upside down.  I am truly just trying to save you time and effort. 
Happy Printing smile
http://i.imgur.com/71tbpke.jpg

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

6

Re: Z Wobble Fix for SD3 & 4

redbarret wrote:

Is that just a regular nut?
Still confused about this, it's called "anti-backlash nut" because it's a specialized nut, or just because it's used here for anti-backlash purpose?

Anti-backlash nuts exists, specially for CNCs I believe. In this case it ia just a regular one.

7

Re: Z Wobble Fix for SD3 & 4

IanJohnson wrote:

It can help with wobble if it lets the nut slide in X and Y without any slop in Z.  I don't know if that is the case with this.  It relies on a tight press fit of the nut rather than trapping it, which would be better.

Yes I know, I'm working on two slots to allow it to slide in X and Y.

8

Re: Z Wobble Fix for SD3 & 4

wardjr wrote:

While I appreciate your efforts and always encourage new ideas and fixes.  I want to inform you that this issue has been covered quite possibly more than any other.  So just a friendly suggestion to have a search and discover the multitude of solutions for this.  My personal favorite is the Well nut upside down.  I am truly just trying to save you time and effort. 
Happy Printing smile
http://i.imgur.com/71tbpke.jpg

Yes, I read about the wellnut fix. For some reason they're hard to come by in my area so while the one I ordered online gets here I decided to work on this one, sort of as a side project. Also to get a better on understanding on how different versions affect printing quality.

Thank you for the suggestions.

9

Re: Z Wobble Fix for SD3 & 4

+1 to the wellnut.
I had problems finding them as well, but found that Lowes had a bunch. 5/16 well nut should pop right up.

Printit Mason and Printit Horizon printers
Multiple SD2s- Bulldog XL, E3D v5/v6/Lite6, Volcano, Hobb Goblin, Titan, .9 motor, Lawsy carriages, direct Y drive, fishing line...the list goes on
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