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Hi everyone, total noob here. I'm experinenting the linuxcnc. I have an asrock j3355b board. I'm planning to use it with parallel port. I tried to install debian and linux cnc 2.9.2 but I cannot solve the kernel issue. When I install debian 12 it comes with kernel 6.x.x and all the RTAI kernel and other stuff is for kernel 5.4. as I understand that kernel and RTAI packages needs to be same. How do you install debian 12 RTAI, please help or direct me to correct direction.

you have to build the skew function into the xyzbc-trt kinematics file and recompile it.

github.com/LinuxCNC/linuxcnc/blob/master...inematics/trtfuncs.c

So, after the success of my first plasma CNC, I thought it time to move her on to a new home, and build a new one. Bigger, faster, more powah!!! 

Im starting with a MESA 7i96 with 2x THCAD10 for volts and ohmic sensing. Closed loop stepper motors will be Nema 34 running 60v. Reduction gearboxes onto helical gears. The z axis will bolt the hypertherm xp45 machine torch and an air scribe. I’ll use an air actuator to drive the scribe to the required height. Everything is running on aluminium extrusion and linear rails. I have prefer up a water bed that is 1500x3000. Giving me adequate space to load up a full sheet. 

I’ll get some pics and links to the parts used as I go along. 

lots of new things for me to learn with this build so no doubt I’ll be calling on the brains trust for guidance again and to help me when I get myself stuck. 

cheers

Well, after 6 years, it’s time to say good bye to this baby. It’s about to leave and move to its new home.

Stay tuned to see my new build that I started last night.

Much the same, just a bit bigger, and faster, and more powerful.

Thanks for all the help and support. I’m probably going to need it for the next one as well.

Cheers

Aciera wrote:

You would need to add the 'skew-y' pin and the corrective terms to the forward and inverse kinematic models of the xyzac-trt kins.

need to add the 'skew-y' pin 
This I understand.

corrective terms to the forward and inverse kinematic models of the xyzac-trt kins.
This is hard for me , not understand.
Now I open .hal of xyzbc and i add 

loadrt skewkins
before line
loadrt xyzbc-trt-kins sparm=identityfirst 

try to run linuxcnc and error  :
<commandline>:0: Pin 'motion.switchkins-type' does not exist
INI file HAL command net :kinstype-select <= motion.analog-out-03 => motion.switchkins-type failed.

Could you please guide me? I am ready to learn it

Thank you,
Asis