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I sucessfully did this by treating them as separate axis's and slaving the input (step, direction) together. Slaving the outputs to the motors together didn't work at all, they stuttered and got out...

The carriage is on. It went on surprisingly easy and adjusted right in, and the tension rods are more of an afterthought- I have them only finger tight and all the slop is out of the bearings. I made...

The gantry is on and the Y pipes are installed. I decided to go with 1/2-13 leadscrews for upgradability even though it's not advised. It's said that 1/2-13 rod it too rough, so I ran a die down the...

I installed and adjusted the gantry last night without the Y axis pipes. (I didn't have enough parts 'in stock' and I couldn't seem to wait until I had another trip to the hardware store.) Pics to...

I finally broke down and bought Davids's book, figured I'd share a few pictures of the build so far. (Now I just have to explain the new machine to my old JGRO.)

I had a similar problem testing out my motors with TurboCNC- it wouldn't move them under 'jog'. Turned out I had limit switches configured that I had not yet hooked up on the new electronics that I...

Those look like the same unipolar motors I myself scrounged, they work well with the PMinMO 3-axis board I built (http://pminmo.com/3axis/3axis.htm). Of course, I'm driving them at 24v, so I have...

Haval,
I personally am running TurboCNC from DAK engineering, which runs under DOS. If you can arrange the motors, and build or buy the electronics (interfaced through the computers parallel...

I built a JGRO (MDF framed machine) with a PMinMO 3 axis board and scrounged motors for around $300. I etched my own circuit boards and used a lot of material I had in my shop already. How good are...

Pick an old one. Wire matrix printers from the 80's were built like tanks, and they got nice sized steppers in them too.

I hand code a lot of my stuff, it's not difficult. There is a nice summary of Gcode commands in the TurboCNC manual (http://www.dakeng.com/), and it's free.

I used oak and coated the inside of the holes liberally with clear sealant, but I agree. If I had had the aluminum....



Mine's on wheels, so's my big saw. I have a small shop and need to move...

Nice build! I see you used a router clamp design like the Joe2006, I've been thinking about doing that to kermit.....

Damn, you're right- they ARE never finished.

Yes, I have some gantry flex but it's negligable. My biggest prob. is linear bearing alignment, but it's me.

Yes, the JGRO looks easier to build than the Joe2006 but the Joe2006 is more solid. Of course, now that I've built the JGRO I can cut the parts for the Joe2006 and build my own Joe2006 kit and have...

Most of my cutting was done on a radial arm saw- external straight cuts are very accurate. I had to do the internal cut on the gantry by hand- so the edge finish covers up the fact that I can't...

I named it "Kermit". I'm still adjusting, but I'm already thinking about upgrading it. The stepper controller is PMinMO's 3 channel board, the motors themselves were scavenged from some old 8.5"...

I used a flat file. I could have used my grinder, but the file was quicker.