Often prototype tooling is made from aluminium that can withstand the pressures experienced in injection moulding. Steel is a better choice if there are moving parts in the mould which are needed to produce side holes or undercuts.
Parts for Defence project, which was for 200 parts, then a later batch which needed the thread shown on the right. The part included undercuts on the base.
Prototype Tooling is often needed to prove parts that cannot be made without the moulding process.
Several hundred parts may be made this way, or even several thousand depending on the complexity of the part, and the intricacy and durability of the mould.
This kind of tooling is quite inexpensive and quick to produce - lead times of under 2 weeks are quite realistic to have moulded parts ready to use.
A very simple prototype mould for a Face Mask. Several parts were moulded, the mould adjusted to get the fit just right and then moulded again. The production mould was then made using the data from the prototype moulds.
Prototype Parts and Tooling
This conveyor segment, machined from solid plastic as a 'proof of concept'. An assembly was made and tested.
Several changes were made, the basic concept proved to be feasible and a production mould was subsequently produced.
Approx sizes 200mm x 80mm x 15mm
3D Computer models of parts to be machined as working prototypes.
Below is the actual machined part prior to painting.
3 sets were machined from solid plastic