Printer Up-cycled CNC Machine Uses More Than Just the Stepper Motors

Final

Sometimes you just know from the photo that this is going to be a really cool project. When most people salvage parts from an old printer, they usually chuck the rest. In this case [Shane] made use of the entire printer to build his CNC machine.

He started with an old HP 2500C A3 printer, which he had planned to salvage for parts only. While he was taking it apart he realized the chassis would make a great frame for his actual CNC machine! With that in mind he quickly changed his game plan to making each axis inside of the printer.

He’s using regular ball bearing drawer runners for both the X and Z axes, covered with a clever design of aluminum angle to keep any possible chips from jamming them. The Y axis on the other hand makes use of the original shaft runners from the print head carriage. Each axis is driven by threaded rod using recycled stepper motors from the printer.

An Arduino UNO sits at the heart of the project with a Protoneer CNC shield to control the stepper drivers. He’s also included an emergency stop, hold, resume, and cancel buttons for manual control.

It’s a great project, and an amazing example of using what is on hand for a project. Stick around after the break to see a demonstration of it printing!

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Everybody needs one


Not the hack o’ the day, but you guys might have noticed that I’ve been pretty quiet on the engadget How-To front. I’ve been spending all my spare time in my garage working on a CNC conversion for the mini mill I bought a few months ago. It features pic based microstepping controllers that handle up to 54 volts and 3amps. I settled for a modified PC power supply for now. I’ve got plans for this thing, including some stuff just for Hack-A-Day. All the mechanical and electronic work is completed; now I’m taking a breather while I wait for the actual beefy stepper motor for the Z-axis pictured above. I celebrated with a coffee stout.

Make a badass CNC mill


Ben Heck and I got into converting a mill to be a CNC machine during our podcast interview. Today I found a pair of great write ups at balbots on modding the Harbor Freight mini mill that I mentioned. Part 1 get into all the details of converting the mill to use stepper motors, and adding a cooling system. Part 2 covers upgrading to DC servo motors and replacing the gears with a belt drive system.

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