News Archive

Joffre Cylinder

Published and found at

Secondly, a sand mould is made from the pattern.Oh, but hang on – what about all the holes – eg the cylinder bore itself?

The sand mould is effectively a negative of the final object – there is space for metal to flow where one wishes metal to solidify.

Secondly, it must be possible to extract the pattern and the core boxes from the finished mould  to provide space for the metal to run into.

Read the full article

Random Photo