Thanks again for the help. I'll look into the venting aspect today.
The mediums that they had were
crushed glass (#50) 20-35
aluminum oxide (80 grit) out of stock
crushed walnut shells
and some kind of slag, cant remember the name
__________________
Jordan Baker
RHLI Museum,
Otter LRC
C15A-Wire3, 1944
Willys MB, 1942
10cwt Canadian trailer
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