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New Pm-25mv

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JayMcClellan

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#1
Hello I'm new to this forum and just recently got my first milling machine, a PM-25MV. So far I'm liking the machine a lot, don't have any experience with others for comparison but it seems to be stable and have plenty of power for my purposes. The column needed minor tramming but everything else was dead-on right from the crate, at least to within my ability to measure it. Rather than get the small stand for it, I'm using a (formerly) rolling tool cart supported on a solid base with leveling feet. I made a temporary enclosure with pegboard and plastic film to contain the chips, which I plan to replace with something more permanent - but "temporary" setups in my shop sometimes last longer than planned so it might stay like this for a while.

PM-25MV.jpg

As a learning project, my nephew and I are each making a matched pair of toolmaker's vises following Tubalcain's YouTube videos. So far they're coming out well.
 

tweinke

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#2
Welcome! Glad to hear you are enjoying your PM-25. Sounds like an awesome way to spend time with your nephew.
 

MonkMan

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#3
Welcome Jay, you can't go wrong with QMT.
 

T Bredehoft

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#4
You've got a good start. I bought my PM25 about a year and a half ago. It's been all I expected. I've made some mods, put in an electric head lift and an X power feed, but its still the same machine, just more friendly. I grew up in a Tool Room, no one worried about chips, so I've got them everywhere, but your solution looks good. I also applaud your choice of projects, small precision vises are a welcome addition to any shop. I have one I made in 1976 that is a third hand often.
 

markba633csi

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#5
Jay where did you buy the gooseneck light? Or did it come with the mill? Looks cool, like a showerhead.
Mark S.
 

JayMcClellan

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#6

3dshooter80

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#7
It looks like you are off to a good start. I know you didn't ask, but I only have one small bit of advice. For 99% of your milling needs, you won't need the swivel base on the vise. I would just mount the vise to the table and only install the swivel base when you need it. This will increase your rigidity in your set up, which means a lot with our hobby sized machines. I do like your neat work area! Welcome to the club!
 

JayMcClellan

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#8
It looks like you are off to a good start. I know you didn't ask, but I only have one small bit of advice. For 99% of your milling needs, you won't need the swivel base on the vise. I would just mount the vise to the table and only install the swivel base when you need it. This will increase your rigidity in your set up, which means a lot with our hobby sized machines. I do like your neat work area! Welcome to the club!
Thanks, I already removed the swivel base. I also milled off the 3/4" flange on the back of the vise that was hitting the vertical way cover, as its only apparent function in my setup was to reduce the usable Y travel by 3/4". That's an advantage of an inexpensive vise like this - I'd hate to start cutting up a $500 vise but I have no qualms modifying this China Special.
 

Bill Kahn

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#10
You've got a good start. I bought my PM25 about a year and a half ago. It's been all I expected. I've made some mods, put in an electric head lift and an X power feed, but its still the same machine, just more friendly. I grew up in a Tool Room, no one worried about chips, so I've got them everywhere, but your solution looks good. I also applaud your choice of projects, small precision vises are a welcome addition to any shop. I have one I made in 1976 that is a third hand often.
I called Precision Mathews today to buy a PM25MV. Talked with Greg. He said they did not have a X Powerfeed for that machine. I did not buy it. Where did you get your X Powerfeed for this machine? Thank you. -Bill
 

T Bredehoft

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#11
I built it with a 12 Volt windshield wiper motor, direct drive with a speed controller, it goes from nothing to 10 inches a minute. No rapid, however.
 

wrmiller

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#13
When I had my PM25 I bought the x-axis pf from Griz for their G704. I don't recall if I had to make any mods to the drive or not, but I don't recall having much difficulty installing it. Worked real well too. :)
 

brav65

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#14
Congratulations on the new mill! Double check with Matt on the x axis power feed as I have one that I got from Matt last year.
 

T Bredehoft

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#15
As I was building my X feed, I installed a ball bearing on left end of the table. Even before the motor got in place, I realized that that bearing reduced the friction by 1/3. I just bored a hole in the cast iron end piece of the table for the bearing.
 

eduonline

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#16
Sorry for hijacking the thread but i was wondering if you know how to remove the z axis leadscrew
i already removed the hand wheel and the pinions but i don't see a way to remove the bearings that keep the lead screw attached to the cast iron part.

thanks in advance guys
 

T Bredehoft

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#17
Its been too long. There is a key in the Z lead screw, above the bearing, in a sleeve, I believe. That has to be removed. Be careful, I dropped two keys in that column. Wish I could remember it better....Computer crashed, lost images.
 

eduonline

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#21
Yes I just pull it out
That worked
Thank you so much
Tomorrow am starting my Cnc conversion

I'll post pics of the build
 
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