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Applying resin to small molds |
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Otterman
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Post subject: Applying resin to small molds  Posted: Mon Dec 11, 2006 1:28 am |
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Most resin instructions say to mix 1 oz / 30 cc per part, yielding a whopping 2 oz / 60 cc of resin.
This is crazy, enough for approximately 3 land raiders (or not crazy if one has molds for 3 land raiders).
Nicely though, most resins can be mixed in proportions as small as 5 cc per part, yielding a more managable 10 cc.
I mix small amounts like this in 1 oz mixing cups purchased in bulk from a local radio-controlled hobby store. Apparently, they use these to measure fuel. They are cheap (a few cents per cup) and flexible. The cups are good for three or four sessions.
I pinch the cups to make a spout, and this works for most purposes. When smaller amounts are called for, I dab a flat wooden stick (US: popsicle stick) or toothpick into the cup, causing the resin to blob onto the wood. Then I tap the instrument into the mold, and the resin comes off.
This typically occurs when I do a two-pour mold. Example: the E:A rhino has a storm bolter on top, which tends to form air bubbles during a one-pour. So, I lay that half of the mold flat and tap some resin into it. Then I use a toothpick or thin wire to work out the air bubble that invariably hides in the bolter. When the resin in that half cures, I assemble the two halves of the mold and do the big pour.
Since it is inefficient to mix 10cc of resin just for a storm bolter, I combine several other mold operations into one. The chosen resin has a sufficiently long 'pot life' so it doesn't thicken during the work process.
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Otterman
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Post subject: Applying resin to small molds Posted: Mon Dec 11, 2006 1:33 am |
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To answer the upcoming question: Smooth-On's Smooth-Cast 305 or 310.
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[ 2 posts ] |
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