Insert Molding Service

Insert Molding Service

Make Strong, Functional Prototypes and Production Parts With Insert Molding

Xometry offers insert molding as part of its injection molding capabilities. For a free insert molding design review and quote, upload your CAD files here. Our expert team of injection molders will get back to you within 24 hours. If you want to learn more about our injection molding capabilities, download our design guide here. If injection molding isn’t the best fit for you, you could also try urethane casting or 3D printing.


Insert Molding is an injection molding process that works especially well for parts that have threaded holes. It can also help you create better wheels, pulleys, fan blades, and other similar parts. Done correctly, insert molding can help:

Eliminate assembly: You can make parts all at once instead of having to do assembly after the fact.
Reduce costs: Insert molding costs more than standard injection molding, but the costs are usually offset by the fact that you no longer need to do post-assembly.
Lower the size and weight of the part: A plastic part with a metal insert is generally lighter than an all-metal part.
Improve reliability: Metal inserts will guarantee the function of threads and mitigate wear and tear over the part’s life.
Improve part strength: Because it’s a “one-shot” process, it can produce stronger parts than overmolding and other processes.