SoliForum - 3D Printing Community — Z wobbling fixes poll

Re: Z wobbling fixes poll

2013-04-12T16:37:27Z

How about any of the 4 or 5 better extruder designs that have been available on this forum for months? I just had to deal with that plastic jigsaw again, and it is a horror.

solidoodlesupport wrote:

Let us know what you'd like Solidoodle to do. If you have some particular mods you would like us to sell with the printer we will look into it.

Re: Z wobbling fixes poll

2013-04-11T14:22:10Z

3DPrinter4Life wrote:

This shouldn't even be an issue with a quality printer. How long till the Z-axis breaks completely for someone...

This really isn't necessary or appropriate in a thread asking about how to fix it...

As for myself, I was fortunate enough to have no Z banding whatsoever right out of the box, My printer works great and I hope there is a great solution for everyone else, and if Z wobble arises when I get my S3

Re: Z wobbling fixes poll

2013-04-11T14:19:28Z

This shouldn't even be an issue with a quality printer. How long till the Z-axis breaks completely for someone...

Re: Z wobbling fixes poll

2013-04-11T14:18:15Z

I think one obvious upgrade path would be to sell a proper 8mm lead screw and follow nut assembly. Maybe this needs to be already mounted to a new Z motor so the less mechanically inclined don't need to worry about pulling the old screw from the motor shaft.

A premium upgrade would be a ball screw assembly.

While the firmware solution is workable, it is a pain to re-calibrate after you've adjusted the Z Home screw.

Re: Z wobbling fixes poll

2013-04-11T12:37:14Z

Rincewind wrote:

solidoodlesupport wrote:
Rincewind wrote:
There are already some fixes for the Z wobbling in the wild, and I think it would be interesting to make a poll to see what are the most used solutions. Please participate and feel free to comment!
Let us know what you'd like Solidoodle to do. If you have some particular mods you would like us to sell with the printer we will look into it.
The Z-wobble issue is on our to do list, but we are open to ideas for quick fixes and upgrades. One particular idea that some people have thrown around is to sell a variety of a Z-rods for the mechanically inclined to try.
Yes I know... This poll is in principle intended both for us (community) and possibly for you (vendor). The reason to do so was that there are a bunch of ideas already tried, but there is no real way of knowing what are actually used in the end (I work in academia and I know well that one publication of a method doesn't necessarily mean that the method is useful in general).
Unfortunately the sample size is not statistically significant, but so far it seems that some anti-backlash solution for the Z axis is indeed useful.

Oh sure. Specifically what I mean is, if there are any suggestions besides the poll, mention those too.

Re: Z wobbling fixes poll

2013-04-11T12:19:18Z

solidoodlesupport wrote:

Rincewind wrote:
There are already some fixes for the Z wobbling in the wild, and I think it would be interesting to make a poll to see what are the most used solutions. Please participate and feel free to comment!
Let us know what you'd like Solidoodle to do. If you have some particular mods you would like us to sell with the printer we will look into it.
The Z-wobble issue is on our to do list, but we are open to ideas for quick fixes and upgrades. One particular idea that some people have thrown around is to sell a variety of a Z-rods for the mechanically inclined to try.

Yes I know... This poll is in principle intended both for us (community) and possibly for you (vendor). The reason to do so was that there are a bunch of ideas already tried, but there is no real way of knowing what are actually used in the end (I work in academia and I know well that one publication of a method doesn't necessarily mean that the method is useful in general).

Unfortunately the sample size is not statistically significant, but so far it seems that some anti-backlash solution for the Z axis is indeed useful.

Re: Z wobbling fixes poll

2013-04-11T11:59:33Z

Rincewind wrote:

There are already some fixes for the Z wobbling in the wild, and I think it would be interesting to make a poll to see what are the most used solutions. Please participate and feel free to comment!

Let us know what you'd like Solidoodle to do. If you have some particular mods you would like us to sell with the printer we will look into it.

The Z-wobble issue is on our to do list, but we are open to ideas for quick fixes and upgrades. One particular idea that some people have thrown around is to sell a variety of a Z-rods for the mechanically inclined to try.

Re: Z wobbling fixes poll

2013-04-10T22:52:36Z

Dude,
This is getting annoying... you have nothing constructive to say in any of your posts so far, except to snark about how badly Solidoodle is doing. If you think you can do better, then contribute instead of harping on the makers of the machine.

Show us how much better your designs are so that we can coo and bow to your amazing intellect... otherwise, keep it at bay.

Do you even OWN a SD2/3?

Re: Z wobbling fixes poll

2013-04-10T22:46:53Z

This is silly. The engineers at solidoodle can't even design a printer with the right ACME screw! They're too cheap to install, and instead give you the unsuspecting consumer an inferior product!

Re: Z wobbling fixes poll

2013-04-07T19:27:55Z

1) Firmware/software compensation
2) Additional printed weight holder (nickels) mounted to outboard (front) of stage
- theory is similar to preload...decreased slop between z-axis threads due to cantilevered load.
- also adds a dampening effect for stage movement.
3) Printed spring loaded stage stabilizers against outboard (front) frames
- stage is compliantly tied to frames and slightly biased downward by printed plastic spring leafs
- in combination with the additional weight above, the stage movement stays tied to the frames.
4) Shimmed extruder motor to stabilize (from front to back) and removed all adj slack I could find in drives.

I also initially added a counterweight system (pulleys, chains, more nickels, steampunk style) to pull up on the stage mount at the z-axis screw. The theory was to bias all of the tolerances out of the z-axis drive from the frame all the way up. It initially gave good results, but, when the OB weight holder was added, it's interaction tended to add noise to the travel. I experimented and decided the OB weight was the simpler and more reliable effect, so have unloaded the rear counterbalance weight. I left the apparatus however because, similar to Dr. Who and bowties, I think chains and pulleys are cool.

Re: Z wobbling fixes poll

2013-04-07T16:31:56Z

I would say the anti-slop solution (nut, rubber o-rings, and washers) took care of about 80% of my banding. The firmware fix took care of another 10 - 15%. There still a little room for improvement but banding is now almost unnoticeable. Out of the box, my prints had deeper threads than my leadscrew!

Re: Z wobbling fixes poll

2013-04-07T16:13:32Z

I had to replace the z lead screw as it was too bent to make reliable prints. I also use Kendall's Jam nut solution with a nut hugger to hold it in place. I probably ought to get a spring in there to make sure it never binds.

Z wobbling fixes poll

2013-04-07T14:04:52Z

There are already some fixes for the Z wobbling in the wild, and I think it would be interesting to make a poll to see what are the most used solutions. Please participate and feel free to comment!