I saw someone mention concrete molds last week when providing dimensions for a plane (Logic, I believe). I've built concrete canoes (American Society of Civil Engineers competition) and work with concrete a lot. I'd like to try making a concrete mold one of these days and have a few questions. Is there a website that describes this process? What mix is used? ( I assume lots of fines to take detail and maybe latex or epoxy admixture for workability and strength) Is reinforcing used/required? If so, what kind? ( Steel, fibermesh, chopped glass, etc.) The post mentioned HDPE coating; how does one coat a concrete mold with HDPE? Is epoxy and a lot of wax going to work? Do you make a stiff mix and lay it on like modeling clay, or a soupy mix and cast a mold like resin? Thanks in advance. -Silas- Too many ideas, not enough time, money, or experience =( RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
