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20 minute casting plaster12/26/2023 ![]() ![]() With the reintroduction of water to any plaster, a new interlocking. ![]() of plaster to make a workable slurry whereas gypsum cements require 22-45 lbs. Dura bond is also a great product for bonding repairs to mismatched plasters to D/W where joint compound and patching plasters will crack.But enough for home repairs back to trainsBob K. The term 'gypsum cement' refers to harder and higher strength plasters manufactured by using heat and pressure. I prefer the 60 but not always available. Durabond is available in 45min (don't use unless your real fast hot batches, working time under 10 min ), 60min an 90min respectivly. Then followed by topping or joint compound which is my preference. It doesn't replace joint compound, however, is a great base for initial tape and blocking of seams and corner beads. Hydrocal is one of the better plasters for repairs or restoration for these pieces.ĭurabond was formulated for the world of gypsum drywall. Hydrocal was exclusively used as a casting plaster- you have seen or heard of the intricate ceiling, cornice moldings of the older victorian/ mansions. Hydrocal and Durabond are totally different products, origionally formulated for their own special purpose. The higher the number, the stronger the final plaster - but cost also rises. Durabond is sold in several 'numbers' - Durabond 30, Durabond 50, etc. We feature beginner and advanced help on all model railroading scales, including layout track plans, model railroad product reviews, model train news, and model railroad forums. In some markets you'll find 'Durabond", which is a competitor to Hydrocal (they were both developed for the same purpose - smoothing out irregularities and screw holes when installing gyprock/plaster wallboard/gypsum wallboard). Model Railroader is the worlds largest magazine on model trains and model railroad layouts. ![]()
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