I've not built any plasmas in years :) I eventually got out of building
those and bought myself a couple of big Trumpf lasers ...
I do notice problems with the TP in the version of LCNC I run on the
router, when cutting at slow speeds, you can't really notice it, but at
medium speeds say, 3 or 4m a minute, I see them ... my software splits the
arcs into quadrants, and I do tend to see a stop on at least one of the
quadrants ... it will slow to a stop, cause a cutter burn on the part and
then continue on.
My header and cut for a simple circle, with entry at roughly 12 oclock
looks looks something like:
%
N10 G21 G40 G49
N20 G64 P0.05
N30 G17
N40 M8
N50 G53 G0 Z0.00
N60 G53 G0 X0.00 Y0.00
N70 ( Load tool End Mill {12 mm})
N80 M6 T1
N90 G43 H1
N100 G54
N110 G0X0.000 Y0.000 S18000 M3
N120 G4 P5.0
N130 G0 Z21.000
N140 (Profile 1)
N150 G0X500.000Y706.000Z16.000
N160 G1Z0.000F900.0
N170 G3X294.000Y500.000I0.000J-206.000F5000.0
N180 G3X500.000Y294.000I206.000J0.000
N190 G3X706.000Y500.000I0.000J206.000
N200 G3X500.000Y706.000I-206.000J0.000
N210 G0Z16.000
N220 M5
N230 M9
N240 G53 G0 Z0.00
N250 G0X0.000Y0.000
N260 G53 G0 X0.00 Y0.00
N270 M2
%
On Mon, 10 Jan 2022 at 11:41, Les Newell <les.new...@fastmail.co.uk> wrote:
> The TP has improved a lot in the last few years. My plasma runs on
> LinuxCNC and it's pretty smooth even on thin materials.
>
> HF is nasty. It gets into everything. If you can afford them, Hypertherm
> cutters use blow back ignition so no HF. They are very popular on CNC
> plasma for this reason.
>
> Les
>
>
> On 08/01/2022 12:32, Robin Szemeti via Emc-users wrote:
> > I built a few plasmas with EMC, the trajectory planner was a problem at
> the
> > time with it not being able to smoothly keep going between IJ arcs. This
> > can cause problems in thin sheet ... maybe it is better now.
> >
> > I always had trouble keeping the HF from the arc start out of the
> > electronics.
>
>
>
> _______________________________________________
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
