Hi David, I have also been in a similar situation as it’s far easier to gain access to a 3D printer over a CNC machine (judging by the complexity of your parts, you would most likely need a CNC machine). 3D printers are cheap and accessible with newer models being almost plug-and-play with very little tinkering required which makes it ideal for R&D and limited production.

3D-printed parts can be very strong if designed with the limitations of 3D printing in mind. With 3D printing, it’s important to take note of layer line direction, wall thicknesses, and infill percentage (if you decide to go with FDM).

Hello David, I am going to have to disagree with the others somewhat, while it is certainly true that 3D printed parts can be designed in such a way to maximize strength, if your main goal is strength then nothing beats a homogenous, machined material. If you plan on turning this into a product then CNC machining will also outstrip 3D printing in terms of production rate.