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I do not think Beeswax or resin will do at all.
You will need pitch.. I get mine from Gotgrit in
the U.S.A. He is good to deal with.
I am doing a 12 incher at the moment but my
problem is with the Foucault test as I have had
Cataract surgery and am also 77 and it is hard
to interpret shadows.
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