Last week I would have told you to invest in better equipment but today while I set and watch my little machine do its thing maybe I feel a little different. This may seem long for an answer to your question but I would like to relay to you my experience with the board to date. It looked good when I unpacked it but a friend told me to inspect it well. I did and found a few solder traces that I scraped off. When I plugged the 5V in I had no 5v power light and never got the LED to work even though there was power. I had the same problem when I added the 24V power but was able to solder in a working LED over the existing one and that fixed that. The 12v fan quit working at this point. (no big deal) I made a newbie mistake wiring the motors and crossed the wire on one there is no miswire protection and blew a Driver, I removed the driver chip (Not Hard) and wired the 4th axis as my Z when I Plugged it in the X driver chip blew. When the first chip blew I ordered two new ones from Digi-Key at $5.50 each. I was going to trash the board at this point and invest over $200.00 on new drivers but my son talked me into installing the two new chips. I think the orginal chips may be Clones but the new ones are real Toshiba's quality drivers. I plugged the 5v in and things worked, added the 24v more things lit up, plugged it into my computer and fired up Mach 3 it workd well. I am now in the process of setting up EMC2 on Linux. Would I buy another ??? Yes it was cheap and can be made work. Driving my 65oz in Nema 17's I can lay my hand on the heat sink after 15 min of steady running the motors. My machine is homemade and small 8 X 5 inch max on X and Y with 3 1/2 inch travel on Z, the tolerances are very tight with UMHW for bearing surfaces and I have no endplay on the 1/4 -20 Screws. It is tight but parts slide easily. I have the X and Y at 1/2 step and the z at full step for now. I have a 1/3 HP rotary grinder flex grinder for a spindle, this gives me up to a 3/16 inch tool diameter. I plan to make printed circuit boards for my next CNC projects with this and do some small parts work. This is my first CNC and the intention is to use it to learn on. I have less than $225.00 invested in the whole thing. If you decide to buy one of these boards I will be glad to help you set it up. As for power, it seems to Like my 175 oz. in. Nema 23's just as well if not better than the Nema 17's. I am posting this response as an up date on the forum. Also I would like to Say Thanks to Tony with out his help I would not have got it running as quick!
Tim