Any thoughts on CNC machines?

SONICJK

Reminds me of...me No, I'm sure of it. I hate him
Well my post got deleted. Damn.

I have a cncrp 4x8 pro that I use in a production environment. It's served me faithfully for 5+ years without much complaining. It's a good machine.
The rigidity is ok, not great but it does well on wood.

For my money I'd probably get JD2's new table.
I have a plasma table from them and dollar for dollar you're not going to get a better machine, even at twice the price. They went absolutely nuts gearing up to make these. I went to the factory and hung out with Bob the owner for a day and he showed me all around. They spent millions and millions setting up to make their tables. The result is a machine that competes easily with 100k+ machines for 15k. Their routers start at 9k.
They make every piece in house down to the circuit boards, it's insane but they do it. One piece aluminum machined gantry, real industrial bearings, servo motors on all axes etc.

https://www.jd2.com/pvd-multiplatform-cnc-table
Beside the JD2 the cncrp looks feels and performs like a toy, and the price is about the same.
 

sav0r

Member
Here's my G0704 conversion. It's been a labor of love but also one of profit. It has a 10 spot tool changer and power draw bar, automatically oiled ways, 2hp 6k spindle. I also installed a spindle encoder so I can rigid tap up to m10 threads. For a G0704 it's fairly tricked out. The enclosure and tool changer are pretty sought after. It is in no way cutting edge, but I can make some nice stuff with it. The best part is that it is 25 feet from my kitchen.









 

3DogNate

"You Meet the Nicest People on a Honda"
Here's my G0704 conversion. It's been a labor of love but also one of profit. It has a 10 spot tool changer and power draw bar, automatically oiled ways, 2hp 6k spindle. I also installed a spindle encoder so I can rigid tap up to m10 threads. For a G0704 it's fairly tricked out. The enclosure and tool changer are pretty sought after. It is in no way cutting edge, but I can make some nice stuff with it. The best part is that it is 25 feet from my kitchen.
Impressive. I also did a G0704 Conversion a couple of years ago. I stopped after the Stepper/Ball screw conversion and a DC Belt driven Spindle conversion with a Tormach TTS. The tool changer is certainly ambitious... Nice job.
 

sav0r

Member
I never did a build thread. It took me years to get it to where you see here. That said, it's been CNC for at lest five years. One of the first mods after converting it to CNC was a 6k spindle motor and belt drive, that has evolved since then. The current brushless motor is fairly large on the head, but it fits.

I machine all sorts of motorcycle stuff as well as race car stuff. It took me a bit to get accustomed to the machine, a G0704 isn't exactly rigid in the scheme of things, but with some practice the results can be great. It's similar to a Tormach 770, but with better rapids, more horsepower, and like 60% of the price for the features.
 

SONICJK

Reminds me of...me No, I'm sure of it. I hate him
I'd love to see a video of the ATC in action. I've been wanting to build one for my dyna but haven't taken the time to do so.
 

sav0r

Member
I'll get a video up once I get the power draw bar back together. I was hoping to finish machining those parts today but I also promised my wife I'd get the bar top on our new bar before the in-law onslaught in the coming weeks. So the bar top happened... I've been working on different belleville arrangements with the PDB, the Tormach Tool System holders (and potential for tool pullout) can be a bit finicky in my experience.

The ATC took some adjustment to get it all working right, from there the magic is in the M6 Macro. Luckily, I didn't have to write that M6 macro myself.

I didn't build the ATC, I actually bought it as a kit. The guy who builds them, as far as I can tell, copied another guys basic home brew ATC design but built it so it's pretty easy to retrofit to a wide variety of machines. The brackets and mounting are all made so they can be moved and adjusted. Once I figured it all out, it's been pretty reliable for me. The price isn't too bad either, certainly less expensive than designing, machining, proofing it on my own would have been. I believe he charges in the $2500 neighborhood, but I've had mine for a long time so it could be more these days. I can send you his contact if interested.
 
Top Bottom