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The problem with casting is these new types of urethane. It is so cheap you do not even have to buy a vacuum pump or have a vacuum chamber. It makes so of these guys think they are masters but the art of casting takes years to learn and if you are going to cast anything at least use good quality urethane and learn what you are trying to do.
Is this a real listing? The "truck" looks like a moldy lazyboy on a pair of broken roller-skates. Its hard enough to find what I am looking for without having to wade through page after page of this crap.I understand you want to try and make a business. Can't you contract out to someone who can make models that look like what they are supposed to be?
Mike, what problems are you having with your molds and castings?? I wouldn't label myself as an expert but perhaps I can help some. Number one, forget about making resin castings in high humidity conditions.Looking at that GHQ Abrams, that definitely is not something for a first casting project. Trying to replicatespun-cast metal with RTV and resin will require some compromises, in terms of the undercuts and thicknessof the smaller parts. Do you have any pictures of the individual GHQ Abrams parts?Post some images of your troubles!