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Unread 28-02-2012, 01:08
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Re: Any good cheap Dallas Machine Shops?

One other thing. You'll see a much bigger multi-part discount on any CNC mill work than you will on lasercut parts. The reason is setup costs. To setup to run lasercut parts, you load in material, load up a 2D DXF of the part(s) and maybe tweak the nesting of the parts. Not that much time to run different parts, especially if they're all the same material.

To setup to run a CNC'd part, you have to load a 3D model in a CAM package, define all the different machining operations on all the machined surfaces, test run the part in the CAM program, export to G-Code, and THEN load material and make the actual part. There's significant time programming each different part. If you're only running a single part, all that programming time goes into the cost of that single part. Spreading it out over multiple parts reduces the programming cost per part.

CNC mill work is still going to be more expensive per part, per hour, per whatever than lasercutting, but it will get cheaper if you're ordering, say 10-100 parts.
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