Design Tips

Get quick advice on creating plastic and metal parts for 3D printing, CNC machining, and injection moulding processes. Designing with manufacturability in mind can accelerate production time and reduce production costs.

9 Tips for Designing Multipart Assemblies

This valuable design tip takes an in-depth look at creating cost-effective assemblies. As finding a creative solution to designing multipart assembly can be difficult, there’s a rule to keep in mind which is: ‘keep it simple’.  This and many other helpful pieces of design advice are contained within this design tip.


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Walls in any moulded plastic part should be no less than 40 to 60 percent that of adjacent walls, and all should fit within recommended thickness ranges for the selected material.

The deep-rib approach (left) shows a box designed with walls as rubs, resulting in higher a cost to machine and polish the mould cavity. With the core-cavity approach (right), the box allows features to be milled with a faster cutter, and is easier to polish. This saves you time and money.

Design Essentials

We've compiled our most essential injection moulding manufacturing tips into a downloadable design guide. Looking at improving manufacturability, reducing production costs through design, material selection, and more. 

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