Starting another conversion Harrison L5a

mblaszkiewicz wrote:

Is there anyway to configure it for the 5i25

No, you use a different setup tool for that, PNCConf.
Try that.

You are ahead of me then, I am taking the casting patterns to the foundry this weekend.

mblaszkiewicz wrote:

What is your new project

This is still the Holbrook lathe.

mblaszkiewicz wrote:

I posted in the software forum but going to repeat here, is there any way to create a usb bootable copy of linux from my pc.

Yes, follow the instructions here:
linuxcnc.org/docs/2.7/html/getting-start...etting-linuxcnc.html

mblaszkiewicz wrote:

How do I calculate the steps and or pitch so when I say move 1 inch it moves 1 inch

Preferably from first principles. Just calculate how many steps it takes to move 1 inch, then that's your scale number for the INI file.

Or answer all the questions in stepconf.

2nd I need to add some backlash into it..

No, really, you want to remove the backlash, not add it

It's much better to swap for ballscrews and have zero backlash, though backlash compensation is actually rather more likely to work on a lathe than a mill.

You can add a fixed value or a mapped value in the INI file
linuxcnc.org/docs/2.7/html/config/ini-co...s__lt_num_gt_section

BACKLASH or COMP_FILE.

If you can find a super-accurate measuring device then the COMP_FILE way can work very well. this test here is using a COMP_FILE after the leadscrews were mapped by a laser thingy.


You might think that this shows that backlash comp can work very well, but what that test doesn't take account of is that cutting forces can switch your backlash direction without the controller knowing.