How would YOU mold / cast these parts?

Zorg, I used alumilite when I pressure moulded and cast some intricate items in the past and it worked like a charm. The silicon cure time was 3 hours, so I left the pressure pot rolling overnight. The resin was the regular fast cure, but I'd recommend the intermediate which takes a bit longer to cure. It gives more working time especially if you are gonna be doing several pours in one casting session. I had zero bubbles nor did I use any separating medium. I do recommend the vaseline and talcum method if you do use a sep medium however. It doesn't soften the castings if it's kept extremely light. Gimme a holler if you want more info on the alumilite. :)
 
zorgs snagged himself a pressure pot on ebay.............oh yeah:love

And you will rejoice once you get it rolling, and see just how easy it makes life...

Some things to remember and have already been touched upon...

When casting under pressure degassing the silicone when creating the molds is even more important, any trapped air in the rubber will also compress and could distort the mold, especially if it's near the casting items surface you will end up with a pimple on the cast...

Take care with the pressure, don't overdue it and blow your pot up!

A slower setting resin helps so that you are not rushing...

When creating the mold, make an additional holding funnel where you pour in the resin, because even though you fill it when you put it under pressure it will be squeezed and you need that little extra resin to remain full...

Good luck, I just up upgraded my pressure/vacuum tank this week just waiting for it to arrive so I can convert it up, a new 10 gallon tank that will accept a 5 gallon bucket without issue :) I plan to mount it horizontal and install some removable drawer glides so I can simply roll the molds in and out when pressure casting... And also create a simple hinge for the lid so alignment isn't so hard in the horizontal position...
 
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