Hi Dave
I finished my masks over the weekend too. I sprayed each one with a metallic primer followed by a coat of flat black. The C9.25 and Vixen have a closed cell foam collar fitted underneath, so that they sit on the C9.25 metal corrector plate cell (actually on top of the 6 screws on the cell) and the Vixen objective cell. Both can be fitted even when the dew shield is fitted on the OTA.
The Mewlon Mask just fits around the end of the OTA, held in place by a closed cell foam collar glued to the S/S mask – I used a contact adhesive for all cells and left them to outgas over the weekend just to get rid of any solvents. For the C9.25 and Vixen 102, I added a knob which allows me to grip the mask and lower it into the dew shield.
The larger masks are very rigid so good choice on the 1.2mm (1.5mm?) S/S.
All I need now are some clear skies to try them out!
Cheers
Dennis