3 Things to Know About Size Limitations for CNC Machining

Serena Ngoh
Written bySerena Ngoh
Aaron Lichtig
Updated byAaron Lichtig
1 min read
Published October 9, 2020Updated July 20, 2026
Learn more about designing within the work envelope of a CNC milling or lathe machine and the availability of post-processing options for larger parts.
Range of CNC parts and tubes. Image Credit: Shutterstock.com/Phonlamai Photo

1. The "Work Envelope" of a machining center...

...describes the machine's travel dimensions. Xometry's partner network includes CNC machiningcenters with 64" (X)" by 32" (Y) by 38" (Z) travel limitations. Keep in mind that the travel limitations do not necessarily translate to maximum part dimensions. Deep features requiring long tooling can cut into the effective work envelope of a machine. 

For parts manufactured on a lathe, the critical limiting dimensions are...

...the maximum part diameter and the overall length of the part. Xometry supports parts up to 18" in diameter, but special considerations can be made for larger parts. The maximum overall length of parts that can be supported also depends on the part's maximum diameter. Live tooling lathes can manufacture more complex turned parts with off-axis features, but this often means smaller effective work envelopes.

3. Part size can affect the availability of different post-processing operations

For example, larger parts often do not fit in media-blasting cabinets. Additionally, for large parts that need to be anodized or electroplated, there can be custom racking requirements.

Congratulations! You're now on your way to building parts that are optimized for our partner network's machine sizes. Read more design tips from our CNC Design Guide or quote now.

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Serena NgohI write about Xometry and all things manufacturing. You might also see me hosting webinars, designing infographics, producing videos, and working directly with customers to tell their manufacturing success stories.Read more articles by Serena Ngoh

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