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  • tuxcnc
  • tuxcnc
28 Jul 2026 13:21
Replied by tuxcnc on topic Help Controller for a Lathe ?

Help Controller for a Lathe ?

Category: CNC Machines

@tuxcnc
So you like the old cranks, that's fine, but looking at your recent posts makes me wonder if you are maybe starting to turn into one:

It's just a stupid idea, even if someone does it and is happy with it...

You're wrong.

Nonsense.

It is big mistake.

One more little gray text on a gray background...
No, thank you.
 

I just hate political correctness.
If someone does something stupid, you need to inform them about it, not praise them and wait until they waste a lot of time and money.
And he will do whatever he wants anyway...

 
  • tuxcnc
  • tuxcnc
28 Jul 2026 13:14
Replied by tuxcnc on topic installing of linxcnc

installing of linxcnc

Category: Installing LinuxCNC

The recommended Linux distribution for the latest version of LinuxCNC.
 

Download latest Debian iso image (current 13.6) and install. (There are thousands guides at the net.)
It is a good idea to manually partitioning and don't use swap partitions (Modern computers with at least few GB of RAM not need swap.)
LinuxCNC without CAD/CAM fits in 8 GB of disk space, 16 GB is better, more will be never used.
You should chose some lightweight window manager. (I preffered xfce4.)
LinuxCNC installation is simple, but I don't have the time or inclination to check now whether I made a mistake, but it should be like this:
apt-get update
apt-get dist-upgrade
apt-get install linux-image-rt-amd64
reboot
apt-get install build-essential dpkg-dev git
cd ~
git clone https://github.com/LinuxCNC/linuxcnc.git linuxcnc-source
cd linuxcnc-source
./debian/configure
apt-get build-dep .
dpkg-checkbuilddeps
# install unmet dependencies if some
dpkg-buildpackage -b --jobs=12
cd ..
apt-get install ./linuxcnc-doc-en_2.10.0~pre1_all.deb
apt-get install ./linuxcnc-uspace_2.10.0~pre0_amd64.deb
apt-get install ./linuxcnc-uspace-dev_2.10.0~pre0_amd64.deb
I don't remember the apt-get build-dep should be before or after ./debian/configure, the rest seems be properly.
  • Aciera
  • Aciera's Avatar
28 Jul 2026 13:03 - 28 Jul 2026 13:04
Replied by Aciera on topic Help Controller for a Lathe ?

Help Controller for a Lathe ?

Category: CNC Machines

@tuxcnc
So you like the old cranks, that's fine, but looking at your recent posts makes me wonder if you are maybe starting to turn into one:

It's just a stupid idea, even if someone does it and is happy with it...

You're wrong.

Nonsense.

It is big mistake.

One more little gray text on a gray background...
No, thank you.

  • csec0128
  • csec0128
28 Jul 2026 12:46
Replied by csec0128 on topic Precix Retrofit Project

Precix Retrofit Project

Category: Driver Boards

Yes. This is actually one of the hard copies I currently have. Mainly looking for additional details for the other components, especially the control board for these machines.
  • tuxcnc
  • tuxcnc
28 Jul 2026 12:32
Replied by tuxcnc on topic Help Controller for a Lathe ?

Help Controller for a Lathe ?

Category: CNC Machines

It might even be a thing to do a "virtual taper attachment" when moving the encoder driving z and x at the same time. :-)
 

Just because something can be done doesn't mean it's worth doing or that it will work as expected.
MPG is intended for positioning movements, not working movements.
There are many reasons why you should not use MPG for turning, but I will give you just one - you can turn the handle faster than the axis is moving, in other words, when you are done turning, the axis will continue to move until it reaches the commanded position.
MPG is not a mechanical crank rigidly connected to the tool and giving the operator a feedback signal.
It's just a stupid idea, even if someone does it and is happy with it...
  • andypugh
  • andypugh's Avatar
28 Jul 2026 12:10
Replied by andypugh on topic USB haas operator panel interface

USB haas operator panel interface

Category: Other User Interfaces

Mesa smart-serial is open, all Mesa firmware is open.
But keeping the USB panel as USB is almost certainly easier and may be technically better.
  • andypugh
  • andypugh's Avatar
28 Jul 2026 12:07
Replied by andypugh on topic installing of linxcnc

installing of linxcnc

Category: Installing LinuxCNC

  • The installation steps for a fresh system.

On a fresh system:
(more details here linuxcnc.org/docs/stable/html/getting-st...etting-linuxcnc.html)
Download this file: www.linuxcnc.org/iso/linuxcnc_2.9.10-amd64.hybrid.iso
Write the file to a USB stick (at least 4.1GB) using the instructions here:
linuxcnc.org/docs/stable/html/getting-st...to_a_bootable_device
Plug the USb drive into the PC, turn it on, go to the BIOS screen (often by pressing F2 during boot) to set the USB stick as the boot device, save and exit, then follow the on-screen instructions. 
 
  • andypugh
  • andypugh's Avatar
28 Jul 2026 11:58
Replied by andypugh on topic Help Controller for a Lathe ?

Help Controller for a Lathe ?

Category: CNC Machines

On my lathe:
bodgesoc.blogspot.com/2016/08/holbrook08.html
I installed a 7i73 inside the apron to handle the limit switches, handwheels and a jog-rate select knob (which is also a switch that selects manual mode to enable jogging).

Your 7i96 has a smart-serial port, so you would connect a 7i73 to that.

It means simpler cabling in the cable chain, but you need to use suitable cat5 cable to handle the continuous flexing. (eg Igus chainflex / LAPP Etherline FD)

I don't see anything in the photo to exclude the possibility that you are in the UK (I look at mains sockets) so if you are, Rapid Electronics sell a lot of these expensive industrial cables by the metre. www.rapidonline.com/lapp-0028308-liyy-pe...e-8-x-0-25mm-63-6718
  • timo
  • timo
28 Jul 2026 11:24
Replied by timo on topic Help Controller for a Lathe ?

Help Controller for a Lathe ?

Category: CNC Machines

I mean I cannot prove 100% right now, but I do not see it cannot be run with two hand encoders (at the same time)

It might even be a thing to do a "virtual taper attachment" when moving the encoder driving z and x at the same time. :-)

I should get going...
  • Japoo_Ness
  • Japoo_Ness
28 Jul 2026 10:43 - 28 Jul 2026 10:46

Retrofitting a 3-axis VMC with DC servos - guidance needed

Category: Driver Boards

If it takes all this just to run the enable signal, I'm thinking it's better to wire it directly to the drive. Is there any good reason to keep it isolated with an extra relay? The 7i97T outputs are already opto-isolated, and my servo drive has a 10kΩ input impedance anyway. Adding a relay isn't really worth it, right?
  • Japoo_Ness
  • Japoo_Ness
28 Jul 2026 10:38

Retrofitting a 3-axis VMC with DC servos - guidance needed

Category: Driver Boards

I'm having some trouble with the servo enable relays.My relays have flyback diodes, but the datasheet is giving me a headache. The coil draws 40mA, but the flyback module includes an LED with no specified current draw. Since I can't be sure of the total load, I'm guessing I can't use it.Would you guys just change the module for these specific commands, or is there a better workaround?

These are the Finder 55 Series

i think its better to use other relays for these ones like interface relays isnt?
  • Logthor
  • Logthor
28 Jul 2026 08:13
DIY CNC was created by Logthor

DIY CNC

Category: Milling Machines

Hi,

I recently acquired a Sherline CNC-ready mill, and I've been thinking about finally getting around to getting it setup. The problem is that I can't decide on what path I should go down (GRBL or LinuxCNC). I'm quite a novice when it comes to CNC machines, so LinuxCNC seems quite daunting. However, the features the software provides are very enticing. I was wondering what you guys think I should do. Additionally, if I do go down the LinuxCNC route, should I go with a 7I96S or an old computer with a parallel port (I haven't tested its latency, but it should be fine; it is a Dell Optiplex)? The reason I'm considering using my old computer is that I can back out if I get way too in over my head (I figure I won't waste as much money).

Thanks,
Logan
  • robh
  • robh
28 Jul 2026 06:53

Sliding Head Lathe for sale - maybe grate devlopment tool for linuxcnc ? UK

Category: User Exchange

willing to give this away for free now

now offering this Free to a keen linuxcnc developer

i did try to reload parameters but the PLC board does not boot, could be as simple as a voltage issue on the PCB.. i dont have the time to fix it, but i am willing to let this go to a good home and more so to someone who can use it develope linuxcnc to such a machine and give back to the community

i can load to transport,
can give away a magazine bar feed with machine also that will need interfacing (LNS BRand)
  • motionmasterupgrade
  • motionmasterupgrade
28 Jul 2026 04:02
Replied by motionmasterupgrade on topic Retrofitting a 3-axis VMC with DC servos - guidance needed

Retrofitting a 3-axis VMC with DC servos - guidance needed

Category: Driver Boards

I am working through retroftting a motionmaster. I kept all my relays. My goal was slightly different, I wanted to keep the wiring as stock as possible because there was a chance of the whole upgrade not working and I would want to sell it stock, but I think I'm far along enough that its worth more as a linuxcnc box now.
  • NWE
  • NWE's Avatar
28 Jul 2026 01:48
Replied by NWE on topic Precix Retrofit Project

Precix Retrofit Project

Category: Driver Boards

For what it's worth, I contacted Copley Controls sales. They said they couldn't help me on that obsolete model, but provided a datasheet on a similar 4113 model. If it can be proved the pinout matches this might help.
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