Large Model Aero Engine Casting and Pattern Making Techniques

摘要

In my first article (MEW 250) I wrote about the casting of a complex crankcase for a V8 engine using the traditional method of pattern and sand. I described how patterns are often better made from PVC rather than wood and that some lateral thinking may be required to work out how the patterns are to be removed from a sand mould. In fact, I went so far as to "think outside the box" quite literally by asking for one section of a pattern to be withdrawn through the side of a mould box.