machining allowance

Also, the draft may provide enough of a machining allowance to begin with.

The machining allowance varies drastically from one process to another.

To compensate for this, a machining allowance should be given in the casting.

This machining allowance may be e.g. 1mm, but this depends on the size of the part and the accuracy of the casting process.

Sand castings generally have a rough surface finish, therefore need a greater machining allowance, whereas die casting has a very fine surface finish, which may not need any machining tolerance.

Process consistency - The induction heating process produces extremely uniform consistent heat this improves accuracy of the forging and can in extreme cases reduce post forging machining allowances and have a positive effect on die life.

Allowance (engineering), an engineering and machining allowance is a planned deviation between an actual dimension and a nominal or theoretical dimension, or between an intermediate-stage dimension and an intended final dimension.