Resin Casting

Hi all how can I make a hollow cast for this part? 20130930_172613.jpg

I am making the McQuarrie millennium falcon and trying to get the cockpit looking right.

Thanks
Anthony
 
Hi all how can I make a hollow cast for this part?View attachment 238220

I am making the McQuarrie millennium falcon and trying to get the cockpit looking right.

Thanks
Anthony

Two-part silicone mould. Have the piece on an angle; clay it up that way. Standing on its pour spout, basically. Build your dam, pour your silicone, when set take the piece out, Vaseline everything, de-clay the piece and pop it back into the mould, wipe down excess Vaseline, pour the inside half of the mould with only the pour spout clay left in place. Because you've set the piece on an angle, when you pour castings air will rise up the pour spout with few bubble traps.
 
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