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Printrbot Plus, V2, CNC Router, 1/16in endmill

by tshilling, published

Printrbot Plus, V2, CNC Router, 1/16in endmill by tshilling Sep 14, 2013

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Summary

Printrbot Plus V2 dxf with dogbones for CNC routing with 1/16in endmill.

Instructions

Since Printrbot has stopped selling kits for there bigger printers I needed to produce the parts myself.

Using the Printrbot Source files from their website I exported all of the Inventor files to a DXF and added the required dog bones to allow it to be cut with a 1/16in end mill. Successfully built and tested. Make sure you measure your router bit exactly and get the right thickness wood, or it will not work.

From there I assembled the printer from the instructions on the Printrbot website. I ordered as much as I could from printrbot.com to give them some money for the great design. The things I couldn't get from them I was able to from amazon and boltdepot.

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What kind of linear bearing are you using on X bridge(4 bearings for Z-axis)? LM12UU are loosely fit into the slots. My bearing dimensions are 30L and 21 OD. Did you find such issue?

Those are the bearings I used. If they are a little loose you can wrap as many layers as needed of tape around them. Did this on another printer to tighten things up and it worked out fine.

For the printer I used a Ramps 1.4. It has been more than suffice to for my needs. As for the CNC, it is a homebuilt 4ft by 4ft beast based off the joescnc evolution. It's a big machine capable of 150ipm cuts and an insane 1,000 ipm rapid. I use Mach 3 to a gecko g540 via an ether net smooth stepper. My machine is going on 6 years old now so there maybe better open source options available that I am not aware of.

what electronics are you using? Are you using the PB Printerboard? What control software are you using for router?

You will need to look around. I designed it for the wood I could get at the big hardware store which was 0.237in thick. I used a

"Freud 04-096 1/16-Inch Diameter by 1/4-Inch Double Flute Straight Router Bit with 1/4-Inch Shank" (Amazon) bit to cut it out taking 1/64in depth passes. The bit radius ended up being a little smaller than advertised so my parts were a little tight and some areas needed to be filed. If I were to cut it again I would lie to my CAM software and tell it I had a smaller bit to loosen up the fit.

As long as you are close in thickness, a small amount of filing/sanding will get you the rest of the way.

What thickness material?

the ideal its 6mm thick, i mesure the printrbotplusv2.1 wich i have and the wood its 6mm

I'm not tracking... I got the original inventor (stp) files from the printrbot website. Then I exported each part to a dxf file and then compiled them into one and made the adjustments for cutting with a CNC rather than a laser cutter (Don't have one of those... yet). Printrbot's early work was all open source and I am sure a search around would find the original LC laser cut info. A lot of the parts should be identical as the only real difference between the two is the bed size.

Very well done. Where are the LC + regular laser cut files though? I couldn't find them do you have a source?

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