Mach 3 plasma post processor glitch

[Anonymous]

I'm going from my phone so it's gonna be quick. Idk if the updated mach 3 post processor for plasma is glitched some how after an update..but it seems that in post it's exaggerating the lead in and lead out moves or something. It's the only thing I can think of. It leads in in a big spiral, cuts the geometry I programmed then leads out in a big spiral. In cam the simulation is perfect. It's only when I post and go into mach 3 it adds the extra spiral lead in and out. I know it's most likely in post because the lead in follows the in/ min I set  then cuts the part followed by the lead out. Super weird I spent 5 hours trying to figure it out. 

[LibertyMachine]

I don't think it's the lead in/out., and your code looks fine. Backplotting on my end looks fine as well.

In Mach3, how are you reading arc moves, I/J or R?

Looking at the Plasma post, it really should give us the option for R or I/J control for controls that prefer one or the other for arc moves

@bob.schultz @GeorgeRoberts is this something that can be added to the Mach3 Plasma Post that's up in the CAMPost Library?

[GeorgeRoberts]

Good Morning,

Thanks for posting! I have tested several files here and can't seem to see the issue.

Are you able to share some sample code which errors? Are you able to correct the errors in the code manually so that the code loads in correctly

[LibertyMachine]

@GeorgeRoberts do you have a copy of Mach3 to test in?

[GeorgeRoberts]

Unfortunately not. I'm only able to back plot the code.

I'll add the useRadius property to this post now

[LibertyMachine]

Right. The issue shows up in the Mach3 backplotter AND motion, not in a stand-alone backplotter. This has come up on occasion. I think if you do a search for "large circles" you might find people running into this in the past with the mill/router side of things. Tormach is known for this issue as well. The solution, iirc, was to swap to R moves instead

[Anonymous]

The code I posted was the one giving me the error. I tried changing the code by hand from G90 to G91 still didn't work. I'm still new at this. Is there a setting in mach 3 I can change ? I'll have to see when I get home from work. I'll let you guys know if I get it going. Thanks for the reply 

[LibertyMachine]

G91 is never going to be the option. What that does is put it into "incremental" motion control. Bad things can happen.

The solution "might" be to get an edit to the post so it outputs arcs using a R value instead of the standard I/J center point control.

What you CAN do is look into the Mach3 documentation for discussion about arc control. I believe you can set it to I/J or R control. Don't quote me on that though

[Anonymous]

Thank you guys for all the help it worked. Saved monthers day. I'm making a dodecahedron succulent planter for my mom as a center piece to her dining table. I really appreciate it cheers