Stiffness and Deflection Testing on the LongMill MK2

The LongMill MK2 is an exceptionally rigid machine. By optimizing the design, we’re able to build and design a capable machine at an affordable price.

Based on our results, a LongMill experiencing regular cutting forces of 10N, which we’ve determined to be representative of a normal cutting load on a hobby CNC machine, we see that the total deflection is under 0.1mm on both the X and Y axis. Given that 0.1mm is roughly the thickness of a sheet of paper, users should expect a very high level of accuracy for their machines.

We created these tests to show users that even though the LongMill is substantially less expensive than other hobby CNC options, it still offers a highly competitive level of rigidity and that customers are not missing out on something just because we’re so affordable.

For the full report, please visit: Stiffness and Deflection Testing on the LongMill MK2 | Sienci Labs


Do you have one for the MK1?

Yep, check out this video (LongMill Deflection + Backlash - YouTube)

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