Advice Please

[guitarbuilder]

My plan is to build a cnc router so that I can cut guitar parts. After reading several cnczone posts I see that many build the first cnc to make the parts for the second cnc. Since I learn best by doing I decided to take that same approach. I am going to build a smaller cnc to hold my dremel and or trim router first. I just bought 3 M061-CE08 Superior Electric Slo-Syn Stepping Motors. (ebay) - The spec I am finding are as follows:
1.25 V DC, 3.8 Amps, 200 Steps Minimum Holding Torque: Unipolar - 60 oz-in, Bipolar - 75 oz-in, NEMA Size 23 . Based on this information can someone advise me on a driver type unipoler/Bipolar as well as what I should look for in power ratings. Since this cnc is just a baby step into the cnc world and with the expectation of building a larger machine with nema 34 motors, the least expensive route would be best. I do plan to buy mach3 and would like to be able use it with both cnc setups. I also have some experience in building electronic kits if that would be an option to keep the cost down

[CarveOne]

60-75 oz/in is a rather low torque rating for guitar making and will probably also be slow. 200 oz/in minimum is more common to machines with large enough cutting capacity for solid guitar bodies and acoustic guitar top/bottoms. A lot of them are made with the Solsylva 25x37 machines and larger.

There will be other parts to be made for guitars that these motors will be adequate for in a smaller machine. Mach3 can be configured for use with multiple machines easily enough. So can EMC2 on Linux computers.

Not sure what to recommend for a driver board for these motors but a bipolar driver board would be better as long as the motors can be wired for it.

CarveOne

[ttjarrett]

Hi Guitarbuilder,

I'm also building a CNC for guitar parts! Here's my build thread:

http://www.cnczone.com/forums/showthread.php?t=71807

After looking into electronics for my machine, I decided to go with a pack from HobbyCNC with their 205oz steppers because it was cheep and was pretty much just what I needed. Their boards may be suitable for your initial set up, but if not, when you upgrade to your larger machine have a look at them.

Thanks,

Toby

[ger21]

The problem you'll run into is that most inexpensive drives are limited to 2.5 or 3 amps. To get the full torque from your motors, you'll need to supply them with the full 3.8 amps. To get the most bang for the buck from those motors, a Gecko G540 would probably be your best option But since those motors are really too small, going with a complete package from Hobbycnc would probably give you much better performance, and the cost for new motors and drives would be similar to the G540's cost.

[Crevice Reamer]

Yep! G540 is the way to go. You can mix or match motors in Keling packages,

http://kelinginc.net/

and his 270 oz in KL23H276-28-4B would probably be perfect. You will also need a Power supply like the $60 KL-350-48 48V/7.3A.

CR.