Step 13Mix & Pour the Plastic
Get two mixing containers (that are the same) and your scale.
Label one container "A" and one "B".
Mix your plastic as indicated in the directions. For Poly Plasti-Flex, mix 35 parts of A to 100 of part B--but note that part B is very viscous like marshmallow fluff, making it difficult to pour, so add A (which is lquidy) to B and mix thoroughly. Mix enough to fill the mold approximately halfway full if rotocasting, or totally full for a solid part.
As soon as it's mixed, fill the mold about halfway full with the plastic, attach cap, and rotate mold extremely vigorously for approximately 10-20 minutes. You may need to shake it in each direction initially to ensure you get it into all the corners, then continue to rotate to get an even coat. You'll be able to see the white plastic through the amber mold, so try to check that there's white plastic everywhere it should be.
Work quickly, as the pour time (the time you have to work with it after parts A and B meet) specified for Plasti-Flex as just 3 minutes.
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