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Home Xometry Community CAD & Software STEP or IGES?

STEP or IGES?

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Hi!  I’m preparing to send a CAD file to my manufacturer for a CNC-machined aluminum enclosure. Would it be better to use a STEP or IGES file to send to the manufacturer? The design has some tricky features like internal ribs and threaded holes, so I want to make sure everything comes through accurately. I’m leaning towards STEP, but I’d love to hear what others prefer and why.

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      Hi!  I’m preparing to send a CAD file to my manufacturer for a CNC-machined aluminum enclosure. Would it be better to use a STEP or IGES file to send to the manufacturer? The design has some tricky features like internal ribs and threaded holes, so I want to make sure everything comes through accurately. I’m leaning towards STEP, but I’d love to hear what others prefer and why.

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      Hi Franz, STEP is definitely the way to go for a CNC-machined part, especially with intricate details like internal ribs and threaded holes. It keeps the solid body data intact and handles features like threads, fillets, and complex surfaces way better than IGES. Plus, it plays nicer with modern CAM software like Fusion 360 and Mastercam.

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      Also, might be worth checking with your manufacturer on whether they prefer modeled threads or just hole callouts. A lot of CNC shops lean towards hole annotations instead of modeled threads since it keeps things simpler in CAM. Hope that helps!

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