miércoles, 19 de marzo de 2008

Captain Future, form sculpting to casting 4

so now it's time for some serious silicone rubber work!, i went to a specialized store and got RTV silicone rubber.

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This stuff is expensive, so i got it in order to copy the figure cause i have some people who wants a piece of Captain future, lol!

This is mixed on a ratio of 10:1, wich means 1 part of catalyst per 10 parts of silicone rubber, i have a scale to weight everything and make sure the mix is properly done.
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After that i use a sharpie pen to mark the pieces in order to dip them in plastiline inside small boxes i made to pour the silicone, thus , creating the first part of the molds.

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then i do the same for all the pieces.

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the small hole marks on the plastiline act as "registration points" the silicone will enter this holes and then, when the other part of the mold is poured, it will capture this shapes too, creating a lock-key effect that helps keeping the mold in the right position.

time for the mix.
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there ain't a problem we can't fix, cuz we can do it in the mix :P..

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let's put some silicone over the piece with a brush to make sure we capture all the detail.

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also, let's take some chunks of silicone from older molds not in use anymore.

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and put them inside the box, trying not to touch the piece with those, this has been done to save new silicone and to recycle old molds.

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same with the body.

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A'ight now, time for a 24 hour break, since this is the time needed for the silicone rubber to cure at 25º.

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