I found that my filter wheel couldnt screw fully into my telescope without some of the filters fouling. So I made this simple 3mm spacer. The spacer is threaded (although you could file this out if preffered) and has lugs so that you can screw it on easily.
I hope this comes in handy to someone, its free for non-comercial use but if you feel you would like to make a small donation this would be much appreciated and helps fund my hobby.
