Sandbags, Frogs, and Jaws
Model Railroader 1981-05
Making small cloth bags filled with lead shot are great tools for clamping parts down (e.g. roofs) that are oddly-shaped and thus hard to clamp with conventional clamps. "Frogs" are weights that put all their pressure on a small tube at the end, which are great for holding down smaller parts. A "jaw" is a deep clamp to hold pressure on parts (two metal strips with a turnbuckle to provide the custom clamping pressure). Includes photos of each device and instructions on how to make them.