I'm getting ready to do my first vacuum casting and am wondering
what others use to create the grooves along the sides of solid
flasks? I've seen the Wax Web product, but it seems a little
pricey--just wondering if there are other alternatives.
And I never was a fan of wax web in any case. The stuff has a
"memory" of being packed flat, and tends to not want to hug the flask
walls. Sometimes it can wander over and contact a wax while
investing, which is not a good thing at all.
Instead, go to Gesswein’s web site, and check out Tyvek flask
These things (invented by a fellow Orchidian, by the way) are
somewhat like light carboard with big holes punched in it, sorta
like Perfboard on steroids. Anyway, they sell two sizes. We get the
larger ones, despite using 2.5 x 2.5 flasks. We cut the liners in
half lengthwise to fit our shorter flasks, trim the length down for
our smaller diameter flasks (which you could use if you’re really
cheap, by piecing bits together) to fit our flasks, and get two
flasks per liner. and they’re pretty cheap. They work better, I
think, than wax web, creating larger air channels down the inside
walls of the flasks, and they stay where you put them and burn out
Try em. You’ll like em.