This post is part of a series on making and using the Gingery Foundry.
We got a foot of snow last weekend which put a damper on my foundry project while I waited (impatiently) for the yard to melt. This weekend I was able to get back to work. The next step in putting together my foundry was to blend up some molding sand. This is a clay-bonded sand mixture designed to hold its shape when packed around a pattern. The synthetic sand recipe I used should ideally have the following proportions (by weight): 91.5% fine silica sand, 7.5% powdered bentonite clay, and 1% wheat flour.