Quote:
Originally Posted by rotorwrench
No hobbing or grinding required. It only shrank a little bit but it will be OK. Aluminum works as good as steel doesn't it?
All joking aside, it would make a good desk paperweight. Small lighter duty parts have been made this way for centuries though. Basic sand casting 101. The pattern part would have to be slightly larger to get it to be the size needed. Some patterns are just wood carvings. Charlie Sorenson did pattern work when he was hired by Ford.
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Many patterns start as wood! Even core boxes. Depending on how many of something your going to make. Higher production can use a match plate made of aluminum. Think about that one, the wooden pattern has to be a certain size to be able to shrink to the aluminum match plate, and the aluminum match plate has to be able to shrink to the size of the actual part. A little bit of math involved there.