Jump to content
Ultimaker Community of 3D Printing Experts
coolal

Acceptable Level of Wobble (runout?) in Z-Axis Screw

Recommended Posts

Hey guys,

I can confidently say that after a week of printing on the UMO+, i'm officially addicted to 3d printing in general. I've started to dial in print settings and i'm getting better and better quality print after print.

There is one thing that keeps catching my attention: the z-axis screw. I bring the bed to it's lowest position anytime I want to remove a print. Consequently, i'm usually watching the bed quickly ascend for the "auto home" function. There's a really slight wobble (probably around .5-1mm of total runout) at the very tip of the z-screw. I can only spot it when it's spinning quickly to bring the bed up.

Is this something I should worry about? Or just the nature of the machining tolerances? So far I haven't noticed any wobble on print corners. So, I'm assuming that it's somewhat kept in check by the brass nut and two linear bearings.

I'd love to hear what is within tolerances.

Thanks again,

Alex

Share this post


Link to post
Share on other sites

Ideally you don't want any wobble but the 2 linear bearings not the screw is what keeps it stable. If they have lots of wobble then you have a problem.

You maybe able to loosen the motor and tighten it again to try and line it up central.

A lot of people don't like how the bed sticks out and some put stiffeners to stop any wobble but that's on the plate not the lead screw.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Our picks

    • Taking Advantage of DfAM
      This is a statement that’s often made about AM/3DP. I'll focus on the way DfAM can take advantage of some of the unique capabilities that AM and 3DP have to offer. I personally think that the use of AM/3DP for light-weighting is one of it’s most exciting possibilities and one that could play a key part in the sustainability of design and manufacturing in the future.
        • Like
      • 3 replies
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!