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.
really nice work. Thanks.
I have remixed it and added a small box on to be attached to your track. The box can be filled with "mass" - so the bolts you mention are not any longer required.
In addition my spool had a very (48mm) inner diameter. This was to small for your caps to center it properly. Have added some adapters as well in mine remix.https://www.thingiverse.com/thing:3714696
Feedback welcome. Thanks for your excellent work.