I am on a mission to make my Chinese K40 Laser Engraver work like a much more expensive USA name-brand machine.  Update to Part 2 – Brain Boosting Previously, I bought and installed a new mainboard of electronics, and a filter for the pungent smoke.  I am happy to say, while the filter still feels … Continue reading Best K40 Laser Upgrades – Upgrading my Laser Engraver Part 3