80mm spindle dust shoe with magnetic connection (100mm hoose).

thingiverse

This is a dust shoe for an 80mm spindle. I tried to reduce dimensions at minimum. It uses 16 magnets (10 x 3 mm) and two 5mm standard pins. Magnets also need to be pushed hard and glued in the pockets. I lightly sanded one side of each magnets for more grip. The pockets are 1mm deeper so you can use double sided adhesive tape. Pay attention to the orientations of the magnets so they attract the other side! There is a 5mm groove to install the brush strip: it needs to be glued or fixed somehow. Still not tried but some small radial screws may help.