![]() ![]() The higher speeds looked OK, so I ran this image as a test: I ran a test speed/power grid and here are the results: After getting the new gantry to move properly and accurately and aligning the laser beam, I decided to cut something out of 3mm birch plywood. In other words, about the only parts of the original K40 I kept were the case and the CO2 tube. I’ve replaced the original firmware board with Cohesion3D LaserBoard (now running with Lightburn), increased the bed size to 12x20 inches with a new gantry, added a scissors lift with stepper motor to adjust Z height (mostly untested at this point), replaced original laser head with one from LightObject and lens from Cloudray, added an air-assist pump, replaced digital control panel with analog ammeter and 10-turn potentiometer and pushbutton switches for laser test and control of smoke/fumes exhaust system. I’ve had my K40 for about 6 months and have spent most of that time upgrading it. ![]()
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