QDEAR BARRY: My home has a forced-air heating system, with ducts installed beneath the concrete slab floor. When it rains for several days in a row, the vents get wet, and some have standing water in ...
In this episode Ben shows how to use silicone to make reusable mold for casting concrete. This is an easy process for making a concrete copy of an existing object. I used Mold Star 30 silicone rubber ...