@ptims wrote:
I've tried to cast the castable resin 4 times now with NO usable results.
It appears the burnout isn't complete.
The resin is cured (after 24 hours in a fingernail salon light box, the resin is very light purple and a bit brittle).
I've been using a 1.5" x 2" flask.
I'm using PlastiCast investment.
Burning out schedule: 2 hours at 300 degrees, 2 hours at 600, 2 hours at 1350, then down to 925 for vacuum casting.
I put 5 small holes (approximately 1/4 inch diameter at the entry door of the oven and left it open about 3/8 of an inch during the 1350 degree part of the burnout (I was hoping more oxygen would get into the burnout chamber).Have any of you had success using an electric burnout oven?
Do you have any suggestions?Peter
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