But have you used it on the bisque molds as a glass release? I have been doing it and it seems fine, but I saw one place that was selling it that said “don’t use on ceramic molds”. So far it’s working for us.
I don’t use it on bisque slumping molds because, frankly, regular kin wash lasts a very, very long time without reapplying. I do use MR-97 on frit casting molds because it gives a finer finish and doesn’t obscure the detail in the molds but once you use it on bisque you cannot go back to using regular kiln wash because the MR-97 seals the mold. I imagine the same is true for Slide.
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