Introduction
The aim of this guide is to enable the designer to take advantage of the technical and commercial benefits offered by the MM casting process. Also included in the guide are design ideas and considerations to help and stimulate the design process
Design Considerations
Wall sections - Thin walls and uniform wall thickness always produce superior castings with minimum porosity, distortion and tolerance spreading.
Casting Tolerances - Tolerances depend on the geometry of each part, but the following tolerances are suggested as a guide to designers.
Supply Of Design Information
Electronically - Drawings or files can be taken on disc or via e-mail. These can be modified and returned with suggestions. Solid model or 3D wire frame information is preferred.
Machining
The machining of castings requires a different approach to the machining of wrought metal components. Castings are never totally flat, square, round or straight. A secondary datum system may be required to define the machining requirements.
Metal Specifications
The MM casting process has been specifically tailored to the production of aluminium and cooper alloys. Micro Metalsmiths offers a large range of these materials to meet some of the most demanding requirements. Components in other materials can be sourced through our supply chain.
Tooling
A tool body is made from aluminium. Moving parts in the tool are produced in brass or steel to prolong their life and maintain accuracy. Design changes can be made quickly, particularly when material is added to the component, as metal is removed from the die.
