10-16-2015, 07:32 AM
For casting your gon I would do a "squish" mold. It consists of a frame that hold the "female" half of the mold and then another frame that is keyed into the other mold that holds the male portion of the mold in alignment.
You put resin in the female portion then insert the male portion and "squish" the resin be tween the two mold halves.
I have used it to make "wooden" gondola shells.
If you look at different resins they have different set times. For a two part mold you need at least a 2-3 minute time. Alumilite sold a resin like that but not in small quantities, so I went to Hobby Silicones and got the equivalent from them.
I use a pressure tank to minimize bubbles in my castings. Its one of those pressure tanks for a paint sprayer, about a 2 gallon tank. I pressurize it to about 40 psi. I also have an incandescent spot light I shine in a container. After the castings come out of the pressure tank I put the molds/casting in the container with the spotlight, which warms up the casting and makes sure the thin sections fully cure.
You put resin in the female portion then insert the male portion and "squish" the resin be tween the two mold halves.
I have used it to make "wooden" gondola shells.
If you look at different resins they have different set times. For a two part mold you need at least a 2-3 minute time. Alumilite sold a resin like that but not in small quantities, so I went to Hobby Silicones and got the equivalent from them.
I use a pressure tank to minimize bubbles in my castings. Its one of those pressure tanks for a paint sprayer, about a 2 gallon tank. I pressurize it to about 40 psi. I also have an incandescent spot light I shine in a container. After the castings come out of the pressure tank I put the molds/casting in the container with the spotlight, which warms up the casting and makes sure the thin sections fully cure.