Post by elskeetro on Jul 22, 2020 23:16:39 GMT -5
Hi All,
I'm using Alumilite Clear Slow, mainly for the long work time.
I exclusively cast in extruded aluminum tubes and PVC pipes.
I usually mix 2 colors, stirring them until they reach ~100-105*F, typically around the 10-12 minute mark. Then pour/mix/swirl them into the tubes and into the pressure pot (40-60 psi, depending on my mood).
I have no bubbles, but often see these strange deformations when demolding (see attached image). It's like the resin poured in, set a bit, then pulled away from the edge of the mold. Sometimes it's a large area, sometimes it's smaller.
I assume it's got something to do with air being trapped or voids being created by the pressure squashing the air bubbles...
Any advice as to what's happening here, and how to avoid it?
Thanks!
Nick
I'm using Alumilite Clear Slow, mainly for the long work time.
I exclusively cast in extruded aluminum tubes and PVC pipes.
I usually mix 2 colors, stirring them until they reach ~100-105*F, typically around the 10-12 minute mark. Then pour/mix/swirl them into the tubes and into the pressure pot (40-60 psi, depending on my mood).
I have no bubbles, but often see these strange deformations when demolding (see attached image). It's like the resin poured in, set a bit, then pulled away from the edge of the mold. Sometimes it's a large area, sometimes it's smaller.
I assume it's got something to do with air being trapped or voids being created by the pressure squashing the air bubbles...
Any advice as to what's happening here, and how to avoid it?
Thanks!
Nick
