An artist cannot afford to under-calculate or even over-calculate the quantity of material required for making a mold. EnvironMolds comes to the rescue with a precise computation for each type of mold.
There are many different methods of making a mold. Irrespective of the method or even material used for the mold, it is important to get the quantity of material right.
Professional mold makers tend towards an eyeball estimate of the plaster, polyurethane resin or silicone rubbers required based on the size of the mold box and model. On the other hand, novice artists are not in a position to make an approximate prediction and can just hope that the materials they purchase will suffice.
It is a fact that the ballpark figures can go wrong either way, leading to unnecessary wastage. Indeed, if an artist mixes too much of rubber or resin, he will have to throw away the excess amount. And if the material falls short, the mold will be incomplete and may even require a complete redo.
The good news
EnvironMolds comes to the rescue with scientific formulae for calculating the exact amount of material needed to make different types of molds. They have taken the varying shapes, materials and techniques into account and provide step-by-step instructions on how to calculate the quantity of material.
The computation does involve mathematics and may appear convoluted at first. But the basic premise is straightforward. Measure the dimensions of the mold box (length, breadth and height) and multiply the figures to get the capacity of the box in cubic inches. Similarly, calculate the volume of the model used for making the mold. The formula will be different for cylindrical boxes and models. Subtracting the volume of the model from that of the mold box will give the net volume of material needed.
There are specific conversion constants for converting this volume into grams or ounces of gypsum plaster, polyurethane resin and silicone rubber. For further details check https://www.artmolds.com/volume-calculator.
Armed with this accurate computation, the artist can use the right quantity of say, silicone rubber and later paint the finished cast with silicone paint.