can i use concrete in a ceramic mold
putting down backer board is a waste of time and money even as going over a mushy cement floor. Backer board is used to stiffen up an latest timber floor or wall. it may also be used even as planning a bath to allow for construct as a lot as slope to a drain. as far as sweating is in touch backer board gained't avert it no matter if that is a project. it really is going to easily make your floor thicker. The sweat comes from the air contact with a cooler floor floor it really is not from water seeping through the floor. A dehumidifier can help to sparkling up this project contained in the summer season months. be particular you employ a sufficient base of thinset (a million/4 inch trowel minimum, a million/2 inch if uneven or tricky spots). blending a latex additive to the grout is likewise a sturdy theory in lower than grade and outside grouting circumstances.
I've never tried, but given the porous and gritty nature of concrete it might react differently than a clay body. If your mold is not replaceable you might want to make a new tester mold to try it out.
If you mean a plaster mold for slip casting - no. Even worse if the concrete is the type that expands somewhat on setting. Ceramic molds work by pulling the water out of the slip along the surface of the mold and then the extra slip is poured out. During the next few minutes the molded object, a thin layer, shrinks back from the plaster and allows removal of the mold or it from the mold. Concrete is sold and heavy and is normally formulated to not shrink. I would expect the concrete to damage the surface of the mold due to the very tight fit that is likely to result.
