PM-25MV Milling Machine: Machining 2nd Op with Centroid Acorn CNC

[@cnc-ua]

Great slow video for how to start. Thank you!!!! Appreciate your effort to record this.

[@DanielMecatronica]

Thank you and the camerawomen for another interesting video.

[@thenetwerx]

Really like what you're doing with these videos! Very informative in a real-world garage usage scenario. Keep up the good work, and don't take the suggestions (criticisms) too hard. You're doing some cool stuff we are all benefiting from!

[@FrancoCNC]

Thanks!

[@pabloflores6328]

and the best is no cut, no edit, real life!!

[@incubatork]

Hi Franco, just subscribed as you have done exactly what i need to do. I have watched your series from start to here on the pm25mv i one go, I have an HBM bf28 vario, which i'm convinced is the same machine(almost)made to EU legislation/spec. I will continue to soke up all the info you are sharing on your channel, looks like you will soon be at 10k, well done.

[@FrancoCNC]

Thanks for watching. I hope my videos help you with your project.

[@ponydown418]

Thanks!!! That's exactly what I needed since I'll be using fusion 360 and acorn cnc when I do my cnc conversion on my pm25mv.

[@FrancoCNC]

Those are both great choices. Both companies have brought high quality features to the market at very low prices.

[@ponydown418]

@@FrancoCNC I can't wait!

[@realloser0]

I bought myself an impact wrange to change tools. This works also very fine, so you dont have to change from the two manual wrenge to the electrical wrenge.

[@realloser0]

NYC CNC Shows a neat solution and also here a more elegant implementation: kzbin.info/www/bejne/ooW4np2ff6p_odE

[@pabloflores6328]

thank you!! really nice to step by step! I will buy a cnc mill!

[@incubatork]

I see you mostly use climb milling, any reason why? its ok for a final pass to get better surface finish but on the heavier chuts tries to pull the bits down into the work and can pull out bits if they are no very secure. With conventional milling the bit is always being pushed away and is far safer on light machines.

[@backyardmachinist]

Hi Franco, Does the master tool method work for spindles that use ER collets? I know these are not repeatable in the z-axis like tapered tooling is, but would it work if one's tooling had dedicated, stationary collars on their end mills and other tooling? Appreciate you sharing your knowledge, thanks.

[@giuliobuccini208]

Very good video, thanks!

[@edwardcruz5187]

hey man, im looking at getting the PM mv25. Did you convert the MV25 to CNC? and was it easy?

[@grappler185]

Can you give us an idea as to how much we should budget to build the full CNC machine?

[@ponydown418]

It cost me roughly 2k to convert my pm25mv. Arizona video cnc kit, acorn board, hybrid motors and drivers, etc..

[@ADBBuild]

Why use that small, LONG endmill to face all that material off when you had a facemill? Run that face mill at max RPM and feed it as high as the machine will allow.

[@juantravis8832]

I know im asking the wrong place but does someone know of a tool to log back into an instagram account? I somehow lost my login password. I love any assistance you can give me

[@yusufaaron5238]

@Juan Travis instablaster :)

[@juantravis8832]

@Yusuf Aaron Thanks for your reply. I found the site through google and Im trying it out atm. Looks like it's gonna take quite some time so I will get back to you later with my results.

[@juantravis8832]

@Yusuf Aaron it did the trick and I actually got access to my account again. Im so happy! Thank you so much you saved my account :D

[@yusufaaron5238]

@Juan Travis no problem :D

[@jakemasheck5005]

In the mdi you typed "m6t1", would entering "t1" do the same thing? Thanks for the info, currently converting my pm30 with centroid acorn.

[@airgunningyup]

4:01 franco takes us gun the gun show (-;

[@xCaptainKlutch97]

How well did it hold tolerance? I see it was mostly plus or minus .01 but did it hit the dimensions you programmed? Great video btw! Can’t wait to see what you make next on this machine

[@FrancoCNC]

That is a great question. Part to part repeat-ability, is very good - both vise jaws are identical in the X and Y dimensions. In X axis, the part is exactly what I programmed. In Y axis, the part is 99.8% of what I programmed. Two possible causes: 1.) there is more deflection in the X-axis than the Y-axis; 2.) The Y-axis ball screw pitch is not exactly 4mm and needs to be compensated in the Centroid software. I'll have to make some more test cuts to know for sure, but either way, it's not a huge problem for me. I'm really happy with the mill, considering it's price and size. The surface finishes are really good - better than what I could get on my G0704.

[@mc-eschx8972]

Did you adjust your spindle pot @29:21? Just in case it helps someone, I mapped the PM-25MV control board for CNC spindle control (using hicon). For the Spindle speed, I wired an analog ADC out to J10 (Yellow(1),Black(2),Red(3)) (Black = 0-10V, Yellow=Gnd, RED=nc). And, for spindle direction I used J7 (nc(1),Blue(2),Yellow(3),Black(4)). Black is common. Blue-Black = FWD, Yellow-Black=REV.

[@FrancoCNC]

It looks like it did. I haven't given Centroid control of my spindle on this machine - but I plan on doing that in the near future. Thanks for the informaiton. Very helpful.

[@MaraD98]

Two quick questions. What R8 collet system are you using that allows you to install and set the tool heights in Mill12 ahead of time? What air system do you have installed around the quill? Btw, thanks for the great videos!

[@FrancoCNC]

The air system is just a piece of cheap lok-line I purchased on eBay. I 3D printed the yellow ring and clamped it to my spindle. Nothing fancy or special but it really makes a big difference.

[@zoonline]

What type of face mill are you running. It left an awesome finish. I've been using a Accusize and it works ok, but really looking for a finish like yours.

[@FrancoCNC]

Something like this: www.shars.com/r8-shank-1-3-4-carbide-indexable-end-mill Nothing fancy but it does the job.

[@zoonline]

Thanks

[@Bpohlman13]

I have a couple questions if you have time to answer them. What do you set your dip switches to? Also, what feeds and speeds do you use for that 1/2" endmill during roughing and finishing? Thanks! I enjoy your channel alot!

[@FrancoCNC]

Quick Question: do you use Fusion360?

[@Bpohlman13]

@@FrancoCNC I use Fusion 360 for cam and solidworks for cad, but planning on using fusion for cad in the near future.

[@Bpohlman13]

@@FrancoCNC Did I miss you talking about my questions in your video?

[@FrancoCNC]

@@Bpohlman13 Hi Brian. Here is a public link that will allow you to view and download the F360 file: a360.co/2T07VgJ You can open it up and see all of my machining parameters.

[@FrancoCNC]

You're talking about the closed loop drivers? As I recall, I'm at 4000 pulses per revolution on all three axes. My X and Y ball screws are 4mm pitch and the Z it 5mm pitch. Those settings are working really well for me.

[@ponydown418]

I'm assuming a haimer could be used as a master tool eh? I was thinking of buying one for setting my edges and z

[@FrancoCNC]

I can't think of a reason why that wouldn't work great.

[@ponydown418]

@@FrancoCNC thanks Bud!

[@WickedWood]

What size/torque of motors are you using and what drivers did you go with? Thanks-

[@FrancoCNC]

I think this will answer all of your questions: kzbin.info/www/bejne/oGqooX-gna6CjLM

[@BrassBuilder]

In addition to the R8 collets, what else are you using to hold the tools? It was never really explained in the video or I missed it.

[@FrancoCNC]

Check this out: kzbin.info/www/bejne/m5mrY2OJo7qtgc0

[@TheJR914]

No VFD ?

[@urgamecshk]

Is this the hardest the machine can run?

[@FrancoCNC]

No, I just tend to baby things a bit.

[@toolanddie9789]

What pendant is that?

[@joesmith2465]

pendant is from centroid

[@FrancoCNC]

www.centroidcnc.com/centroid_diy/wireless_mpg_control_pendant.html

[@urgamecshk]

Dude, just jog to z1. And slide a 123 under the endmill before starting your job. Stop wasting time with your scale

[@thenetwerx]

Doing that in conjunction with using a proper edge finder would be the way to go in my opinion also. Faster, more accurate and safer.

[@tkarlmann]

You've got a multi-thousand-dollar setup, and 'softjaws' are the best thing you can think of to make? B O R I N G!

[@FrancoCNC]

Well, I had need for a fresh set. What else can I say?