K40 laser focal meter
thingiverse
This tool helps you set the correct focal length for a K40 laser cutter. The standard focal length of a K40 is 50.8mm. To achieve the best cuts, the focus point should be centered within your material, making it essential to consider the material's thickness. For example, with a 3mm thick material, the optimal focal length would be 49.3mm. My tool offers several options: 46.8mm, 47.8mm, 48.8mm, 49.3mm, 49.8mm, 50.3mm, and 50.8mm. For more information on this process, visit https://k40laser.se/diy-how-to/setting-the-proper-focus-in-your-k40/.
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