. How Much ComposiMold do you need?
ComposiMold has virtually no shelf-life if kept covered. It’s a handy a tool for mold making to keep around.
Start by figuring out the size of your part. If your model has a simple shape, the easiest way to estimate is to take the length, width and height dimensions as an estimate in cubic centimeters or cubic inches. To this dimension, add an inch to each dimension and find the total area of your mold (Or use the volume of your container that you will be molding the part in) Subtract the part size from the container size and multiply by the density of the ComposiMold. This will give you the amount of ComposiMold you need.
Here is an example:
The part to be molded is 4.5 x 6 x 0.5 inches. It is suggested to use about a 0.5 inch of ComposiMold around to provide support.
So 5.5 x 7 x 1.5 inch container. 57.75 cubic inches of material
Minus the original piece 4.5 x 5 x 0.5=13.5 cubic inches. So 57.75-13.5 = 44.25
Convert to weight. ComposiMold has a density of 1.2 g/cc (0.7 ounces per cubic inch) so: 44 times 0.7 = about 30 ounces of ComposiMold to make this mold.
ComposiMold is also convenient because if you decide to make the mold bigger or use too much material, you can just reuse it later, so it is not just wasted unlike most mold making materials.