Thanks Chris, that's a great help. I am reading that you find it better to use 2 layers of film in the cutout?
Yes I can see the advantage of overlapping the outside of the SCT to be safe. It seems I may have some spare film to make a filter for my friend who has an ETX125. I think he will be happy.
Thanks for taking the time to add pictures for me. Appreciated.
Regards
Mardy
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