Piggy Baby

Step 10 Mix & Pour the Rubber

Get out your scale, three plastic mixing containers (two of the same kind for parts A and B of the rubber, plus a third container to transfer your mixture to), a rubber spatula for mixing, and a big pile of paper towels.

Put down some kraft paper or plastic to protect your work surface and put on gloves to protect your hands.

Label one container "A" and one "B" to keep your components straight.

Place a container on your scale, and zero the scale.

After reading the instructions for your rubber carefully, weigh out the appropriate amount of each component (for Polytek 75-60, 1 part of A to 1 part B, by weight) into the marked containers. Be sure the combined volume will be sufficient to well cover the part.

When you and the box mold are both ready, combine parts A and B of the rubber as noted in the instructions for the material (for Poly 75-60, pour part A into part B), and stir thoroughly with a rubber or metal spatula. Once combined, scrape the mixture into a clean mixing container and stir again to ensure it's completely mixed.

Immediately pour the mixed rubber into the box mold, filling it at least 1/2" above the top of the part.