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I wouldn't worry about the stepper motors being too hot. According to Gecko, you're fine up to about 85ºC.

Moore gear seems to be the preferred place to buy from right now. You still have to email them for a quote, but it's not too big a hassle, and I understand their racks are better quality than...

You have to calculate the number of pulses it takes to move your machine a certain distance--usually 1 inch -- and put it into your control software. For example, if you're using a 10 microstep...

I burned up two of those Keling power supplies already. I think the biggest problem though was sawdust getting in and ruining the fans. Another thing to keep in mind is that when your motors...

Man, that looks nice! Now you make me want to start building a miniature CNC. Argghh, must....resist.....temptation....:D

I'd stick with the 48v personally. You'd get better performance out of the motors. And don't use anything besides the G540 unless it's some G201x's or 203v's. ;) (But there would be no point unless...

Add me to the list of people willing to purchase one.

One minor thing to be aware of with the kits from CNCRouterparts is that the resistor is supposed to go right up by the drive, not on the motor end of the cable. But so far, no one has seemed to...

I wouldn't touch it. Those 425 oz-in motors would have terrible performance with only 24v. Plus, who knows of what questionable quality the drives are anyway? I haven't really heard of any...

That kit you linked to is the same one that's sold at CNCRouterparts. I'm sure Ahren would actually appreciate it if you bought it directly from his website, as he wouldn't have to pay as much in...

It's just a transformer, capacitor, and a 20 amp fuse mounted to a nice metal chassis. This could possibly be the exact one I have, but I paid a lot less for it than that!...

I've used both, and I highly prefer a linear power supply. Reason? Because I burned up a couple cheap switching power supplies. When they were working, I couldn't tell any difference in how the...

Excellent link there, hemsworthlad. If I were in Oz, I'd buy the G540 and those 387 oz-in motors from him. Those motors are very well matched to get the most out of the G540. But the biggest power...

That power supply will probably work, but you'd be better off with something like a 15 amp. I actually burned up a couple of smaller power supplies before I finally found me a massive unregulated...

I'll definitely be watching for your Nema 34 motor when you have it for sale. I'm wanting to build a large router, and that might be the perfect thing for me.

I wouldn't go with any of those China motor/driver kits. They're very poorly matched, and way too easy to fry. Spend your money wisely once and get a G540 kit. Here's a really nice package:...

I'm sure the Gecko steppers are excellent (made in the USA, even). However, the ones from CNCRouterparts are probably a better bang for your buck. Plus, it's prewired for the G540. I have one that...

Someone with more electronics experience would need to confirm this for me. But I'm sure those motors would be way better off with much higher than 30v. They'd probably be happy with around 80v. ...

Mariss has come up with a formula for determining the optimum voltage for a stepper motor. You take the square root of the inductance (in mH) and multiply it by 32. Those 287 oz-in motors you were...

I personally wouldn't buy either kit. The motors on the first one are way too small, and the second kit, they are very poorly matched to the power supply voltage. I've had the very best experience...

I'm interested in a reasonably priced ATC spindle. Last time I looked at a Colombo ATC spindle, the price was way too far out of my budget. I'm interested to see what you can come up with. It...

Ok, I found some 15mm rails in stock from Automation-overstock:
automation products from Automation Overstock: AGR15RxxxxH, AG Linear Rail, 15mm, *specify length, Hiwin AG 15 Rail

Do you think...

Thanks for the heads up there, Igalla. I wasn't even paying attention to that. These are the older "legacy" style rails I was looking at. I can't find any on their site with the mounting from the...

Well, it's time to bring this thread back. I've decided to use the Motionking 34HS9801 stepper motor. 34HS Stepper Motor 86mm 1.8degree, MotionKing Stepper Motor

That one should work absolutely...

Arggghhh! Stupid browser erased my message. :(

Anyway, the cheapest I've figured you can build a very small CNC for (say a 13"x13" cutting area) would be at least $300. Most of this is in your...

CarveOne, do you think the Nema 23 motors are sufficient? I was thinking of going with the Keling Nema 34 906 oz-in motors. Do you think I'm going too big with those? The guys over at the...

When I get some more money and time, I want to build me a rack & pinion machine. I plan on using Nema 34 size motors with Gecko 201x drives. With the r&p drive from CNCRouter parts, I should be...

Decisions, decisions! At present, I'm probably leaning a little more towards the stepper side. Mainly because I'm familiar with them, and also so I can take advantage of Ahren's r&p system. The...

Hey, if you need a place to store that file, I'll gladly host it for you. (Plus I want to try it out, too!)
You can PM me or send me an email at hyrichter@g m a i l.com

Thanks. I took a look at those, and that looks like a sweet machine. I didn't realize that the DMM servos have a max speed of 1080 rpm. That's actually a lot more realistic for me. So that means...