74 mm core for iRoberti spoolholder
youmagine
I designed a custom-length core for the spoolholder from iRoberti, found at https://www.youmagine.com/designs/low-friction-um2-spoolholder. This version incorporates 608 bearings and includes a precise-fit spacer that can be scaled as needed. The design now accommodates both UM spools and slightly thicker spools from 3Dnet with perfect fitment.
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