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.

Well getting back to work on the machine this weekend. I finally got off my butt and made made the mounts for my steppers and all the bushings I needed. I was hoping to have it done last weekend but one of the timing belts I needed was only available on line. So I will post some pics and get this thing up and running this weekend. Wish me luck.

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

What is your new project

mblaszkiewicz wrote: What is your new project

This is still the Holbrook lathe.

Ok got everything mounted on the lathe. Just need to get linuxc on my pc and wire everything up. did run into one snag. my x axis pullys and belt dont match exactly. They are both 8mm but one is a gt3 (belt) which has full round teeth on it. sop ordered a new set of pullys and belts. should be here tuesday. I really need to finish this up I have a job avaiable for the machine to make some cash.

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. (i used my brother tc-211 pc to bench test evrything and it is all configured. I would like to make a bootable usb key of it and load it on my other pc for the 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

Ok got the axis to move around. Now I just need to tune it in.

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

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

Any help would be great.

ps I used the pcconfig to set everything up. No changes to the ini.

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.