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Just a quick demo of how to find the focus point on a k40 laser cutter.
REAL RIDE by Nicolai Heidlas Music https://soundcloud/nicolai-heidlas
Creative Commons — Attribution 3.0 Unported— CC BY 3.0
http://creativmons.org/licenses/b…
Music promoted by Audio Library https://youtu.be/AkumpVSv1VY
UCOnMlI1Si4i0O2Wkz-XReww
laser cutter
#Focusing #40W #laser #cutter