MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
You tighten the screw until the top brace arm no longer wiggles. If you tighten the brace with to much force you my crack the acrylic frame!
Serious recommendation: Remove the the cups you mounted on the threaded shaft which must move freely! A fixed threaded shaft will counteract with the guidance shaft which will reduce quality in the print.