CNC router built with 80/20 rail

building-a-cnc-mill

There’s still quite a bit of machining that goes into a CNC mill build of this size. But using 80/20 brand extruded rail optimizes most of the build process into tasks manageable by the average basement hacker. That’s not to say that we think [Jim] is average. He took this mill from start to finish in just two weeks.

He picked up the set of three ball screws on eBay for $180. Two of them drive the X axis with the third moving the cutter assembly along the Y axis. The X axis travels along a set of precision rails instead of precision rods. He machined his own mounting plates to which those are attached. For now he’s not running the motors at full speed because the vibration starts to make the table shake. He may end up bolting the base to the floor once all is said and done.

We see this extruded rail used all over the place. We could highlight some other mill builds or 3d printers, but instead we think you’ll enjoy an extruded rail robotic bass guitar.

Oh, one last thing. We’re not against a bit of pandering. Below you can see the mill cutting out the Hackaday logo:

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FABR: Another 3d printing project


[Lou]‘s been working on his own 3d printer: fabr. We find it appealing because the entry cost is quit a bit lower than something like the reprap. 80/20 isn’t that cheap, but you don’t need a large commercial laser cutter to build the chassis. The steppers he used appear to be inexpensive ones that can be salvaged from dot matrix printer. To drive it, he’s working on a custom microstepping board and hopes to eventually develop an Arduino shield to control the stepper drivers. That’s right, it’ll get an Arudino to act as the CNC control interface.

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