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Group: Forum Members
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Yeh no, my experience is very much in line with yours. Tool sealers do a good job, but I haven't ever managed to get anything close to the surface finish I can get with traditional mould making. For me the only way to do it is to make splash moulds and then new patterns that can be polished to a higher standard and then remake the final moulds. Its tedious and not an ideal way to do things, especially if accuracy is critically important. Making copies of copies always results in some degree of dimensional change.
This is really why I dont use much epoxy tooling board. When I mill things, I mill it from polyurethane tooling board and pattern coat them (the thickness of which is taken into account when doing the CAD model), then make moulds the old fashioned way.
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