A member of our club (MPAS) is selling custom made filter sliders with threaded holes for 2" filters. The slider is designed to be used inside a larger reflector OTA (behind the focuser). Images are attached.
I have a similar setup in my Dob and it is very convenient.
The unit comes with one holder and two sliders, so it can hold eight 2-inch filters in total. Price - $120 + postage or pickup from Chelsea (VIC).
