Stronger Spool Holder for Promega

thingiverse

This modified spool holder, tailored for use with the Promega, offers a substantial upgrade over the stock holders provided in the box. The original units were plagued by inadequate infill and a propensity to split under load, rendering them ineffective. In contrast, this revised design cleverly makes precise cuts around the bolt holes, thereby fortifying that area through the addition of extra perimeters.