• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.

New PM-25MV Mill

January Project of the Month [3]
[10] Like what you see?
Click here to donate to this forum and upgrade your account!


Active Member
Active Member
Jan 20, 2016
Its upgrade time! I've got some new parts coming for the mill so I figured I would post a quick update, as well as summarize the costs for everything so far in case anyone else is looking to go the same route.

Parts and costs all including shipping:
2 400 oz in Nema 23 steppers - $67
1 1000 oz in Nema 34 stepper - $69.79
2 DM542T stepper drivers - $67.90
1 DM860T stepper driver - $53.95
1 550 mm SFU1605 ballscrew - $65
1 750mm DFU1605 ballscrew - $50
1 350mm DFU1605 ballscrew - $50
6 7001 AC bearings - $15.54
3 flexible couplers - $15
4 inch mill vise - $100
PM-25 mill - $1649
350 watt power supply - $30
240 watt power supply - $20
Break out board - $10
Aluminum stock - $10
Total - $2271.18

I am hoping to install the new drivers today. I am hoping they run much smoother than the TB6600s. I think the ballscrews are supposed to be delivered tomorrow, so I will update once I figure out if they are any good.

For the tool changer, I have a piece of 4 inch aluminum bar 8" long being delivered tomorrow to make an air cylinder. I also have 36" of 12L14 steel for tool holders coming. The mill will probably be used in lathe mode to make most of those. I also made the umbrella a little bit bigger to hold 12 tools instead of 10.

I also finished the first part CNCd part made on the machine. I got the backlash figured out and I got the X axis to stop losing steps. It is the electronics box for my micro lathe. This machine really can rip up some metal.

[5] [7]