CD Drive CNC Machine Steals Matt Groening’s Job, Says ‘Ha Ha’

CD Drive CNC Machine

DIY CNC Machines are fun to build. There are a lot of different designs all over the internet. Some are large and some small. Some are made from new material and others from recycled parts. [Leonardo's] newest project is at the absolute far end of the small and recycled spectra. His CNC Machine is made from CD Drives and can draw a mean Nelson.

First, the CD Drives were disassembled to gain access to the carriages. These were then mounted to a quick and dirty wooden frame. Notice the Y Axis carriage is mounted with bolts and nuts that allow for leveling of the bed, not a bad idea. A Bic pen mounted to the Z axis carriage is responsible for the drawing duties.

[Leonardo] does something a little different for generating his g-code. First he takes a bitmap image and converts it to monochrome using MS Paint. The image is then imported into Cadsoft Eagle and using a modified import_bmp.ulp script. The bitmap is converted into what Eagle considers wire traces and then outputted as x and y coordinates for each wire complete with a command for lifting and lowering the pen.

A PC sends the move commands via USB, through a PL2303HX USB-Serial TTL Converter, to a PIC16F628A which, in turn, sends step and direction signals to the three Easy Driver stepper motor drivers. The stepper motor drivers are connected directly to the original CD Drive motors.

Check out the video after the break….

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$250; Pushing The Limit On Cheap (And Functional) CNC Machine Builds

 

$250 cnc machine - rotary tool

Cost is always a drawback and a hurdle when buying or building a CNC Machine, especially when building it just for fun or hobby. [Eric] was able to cobble together a working 3-axis rotary tool based machine for about $250, a few trips to the hardware store and a bunch of time.

The machine design is loosely based on this one he found on Instructables. [Eric] chose this style because he felt the boom supported tool would have been more stable and easier to build than a gantry style machine. Skate bearings, HDPE sliders and c-channel aluminum were used to support the XY table instead of traditional linear bearings and rails. All three axes are driven with stepper motors and 1/4″-20 threaded rods. The Harbor Freight dremel-style rotary tool helps keep the overall cost down.

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One-night No Budget CNC Machine

low budget CNC machine

The Hackerspace Kraków in Poland hosts a weekly event on Fridays called NightHack. The idea is simple. It’s late Friday night, all the stores are closed — something needs to be hacked.

Just this past Friday night, they decided to try making a CNC machine using only what they had in the space. And gosh darn it, did they ever succeed! The build makes use of an Arduino Mega, broken Playstation 3 drives, a few spare L293D ICs, some hot glue, and wood. The resulting CNC machine is an awesome example of what can be done in a night with the right group of people working together.

It might not be powerful enough to do milling, but works quite well as a small CNC drawing plotter with its massive 5x5cm work area, with a resolution of 0.16mm. Next week they hope to modify it to allow for PCB drilling, which at the right feed rates, might just be possible!

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