2" to 1.25" Filter Adapter

thingiverse

This adapter lets you combine a 1.25" astronomy filter with a filter wheel designed for 2" filters, giving you flexibility on one filter wheel. The threads on these filters are too fine to make using a 3D printer, so I've come up with a spring arm design that holds the 1.25 inch filter in place by gripping its sides and does the same to grip the walls of the 2 inch filter thread. **CAUTION** I'm using this adapter myself and have put a lot of effort into getting it right, but every printer is different, so please check your printed version to make sure it's safe for your setup and won't fall out in extreme temperatures - it's free, so there's no warranty or comeback if the filter drops out and breaks something! Just use some common sense.