"Designing robotics for 3D prototypes is not without its challenges—3D printed parts aren’t quite the same as their more expensive machined and molded cousins, and we need to take into account the tolerances, surface finishes, and other limitations of manufacturing. "
This article will give you key design tips to keep in mind when designing parts for fabrication with CNC machining, to save you costs and keep your project on-budget.
While engineering drawings are a great way to communicate design intent for CNC machining, providing a drawing with your prototype RFQ (request-for-quote) may actually make your quote more expensive and incur longer lead times. That’s because an engineering drawing is a legally binding document. Cautious machine shops carefully review every call-out on a drawing to make sure each one is feasible and it takes longer to quote a fully dimensioned drawing compared to a drawing with only a few inspection call-outs.
Delrin (generic: acetal) is a low-friction, high-stiffness material. It is used in applications ranging from auto parts to musical instruments. With a relatively high toughness and minimal elongation, Delrin boasts excellent dimensional accuracy.
Aluminum is one of the most commonly used metals in the world because of its excellent strength-to-weight ratio, low cost, and recyclability. Fictiv offers multiple aluminum alloys.
Stainless steel is highly resistant to corrosion and rust, making it suitable for situations where a part may be exposed to the elements for long period of time. Stainless steel is also fairly malleable and ductile. Fictiv offers multiple stainless steel alloys, including a food-safe variety.
Materials properties for all of Fictiv's CNC machining materials, including tensile strength, elongation at break, hardness, density, and max temperature.
Get a free CNC material sample puzzle kit, that includes 6 of our most commonly machined materials (4 plastics, 2 metals, including Delrin 150, Polycarbonate, ABS, Nylon, Aluminum 6061, and Stainless Steel 304L.
Learn about the CNC turning processes, available material options and properties, and corresponding feature design recommendations.
Use discount code INTUITIVECNC to get a free Fictiv CNC Periodic Table of Elements Poster -- a 24" x 36" poster that highlights the foundational elements of CNC machining.