Category Archives: CNC

The engraver is running; here is a practice part. This was done on scrap bronze with a .018 inch diameter end mill turning at 24000 rpm and travelling at 4 inches/minute. The groove is about .005 inch deep. My design … Continue reading →

The control panel for the engraver is now wired. The front has some switches to give me direct control of stepper enable, spindle power, etc. Here is the back side. There are three switching power supplies. If there are any … Continue reading →

I now have all the wiring anchored to my CNC mill. Quite a bit of the labor was in mounting the limit switches. The engraving mill will connect to its control panel by 7 four pin connectors: 3 for step … Continue reading →

I have purchased the motion controller and stepper driver for my engraver. The two boards are KFLOP and KSTEP from dynomotion.com. They communicate together by a 26 line ribbon cable, and controller KFLOP talks to a PC console by USB. … Continue reading →

This is the next step toward a CNC engraver, a complete X-Y table. The structure here is three sheets of 1/2 inch thick MIC-6: 6×6, 6×12, and 12×12 inches. They provide a 6×6 work surface with motion of nearly 6 … Continue reading →

For the engraver Y axis, I have made a temporary limit switch bracket of wood, and wired a relay to change the travel direction at each limit. As initially assembled, the NEMA 17 stepper would move the table smoothly at … Continue reading →

Now I have mounted the linear actuator on the slide, and have a working Y axis for my CNC engraver. Driving the motor here is a board based on the Toshiba TB6560 IC. Like any stepper driver, it requires logic … Continue reading →

For positioning my CNC engraver, I have chosen acme screws. I am using 3/8-12 standard acme rod; I do not think that a precision acme is need for engraving, as long as the nut is an anti-backlash design. 3/8 inch … Continue reading →