Unable to export 3D printed parts from Onshape to make modifications

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Hi,

Am trying to work on my Longmill Redux project and part of that is upgrading the lead screws to ball screws. A problem I am running into is the placement of the holes for the flange bearings is 0.06" off from being able to allow the ball nuts from clearing the 90 angle rail inner corner radius.

How do I download the files for the part?

You have to sign up for an account. After I did that I was able to download the step files for the entire Mk1. Doesn’t look like they have the MK2 files out there.

Chris