Solid focus ring for later model Bartech handunit, with diameter 74.7mm. Must produce with "White Strong Flexible Polished" for proper friction fit.
Requires modification of handunit; need to install a 4-40 socket cap screw as indexing mark for rounded notch.
This material is porous so you need to finish with a few coats of polyurethane to seal it, but will never be as fully impermeable to markers as rings machined from Delrin or other solid plastic.
8.04 w x
8.04 d x
3.165 w x
3.165 d x