NativeCAM is Features renamed

The problem with simply mirroring a tool path, is it reverses the path direction of cut. (conventional milling to climb milling for example.) That can have unintended consequences, especially when milling wood. Such as corners chipping off, or pieces cut different sizes, and poor surface finishes. (I generally just set up 2 files a left and right one, even on machines that have the mirroring code.)

eFalegname wrote: ...on a wood router cnc cabinet parts have to be left side and right, for that reason a mirror feature is very important, a sort of G50-G51 Gcode in mach3 not implemented in linuxcnc. Under the Group "Offset-Rotation" could you add a Mirror toolpath function maybe flipping and shifting the current workoffset (not rotating it) and not reversing the toolpaths to mantain the same milling direction?

Hi Floris,

I do not know what shape you want mirror but there are possibilities with "Polyline'. The only restriction is pocketing.

Version 0.1.4 is available now and it should be installed on your computer.

Open the example 'Lathe cnc conversion/sensors bracket.xml'.
I designed the right half of the profile with 4 elements and then mirrored everything from the beginning. Changing dimensions of those elements will be reflected on the left side.

This works inside an item but for a whole shape, you first create the polyline you want (closed or open) like the strange one here, then add a 'Polyline mirror'.
You can mirror on X or Y axes, offset, rotate, mill clockwise or counter-clockwise.


Can these work for you ?

Fern

P.S. In this new version, I added 'Dynamic diameter' in Tool change. You have to replace old 'Tool change' for the new one.
Tell me if it works like you wished

When generating code.

G20 gets inserted after the preamble with G21 G17 etc How can I stop this please this means the G20 changes back to imperial

Many thank for a great product

Clive s wrote: When generating code.
G20 gets inserted after the preamble with G21 G17 etc
How can I stop this please this means the G20 changes back to imperial

DO NOT USE G20/G21 IN THE PREAMBLE
NativeCAM identifies metric or imperial in TRAJ section of your inifile.

Fern

FernV wrote:

Clive s wrote: When generating code.
G20 gets inserted after the preamble with G21 G17 etc
How can I stop this please this means the G20 changes back to imperial

NativeCAM identifies metric or imperial in TRAJ section of your inifile

Fern

Thanks for the rapid response I have metric in the TRAJ ini I do have G21 to the preamble under preferences

I forgot to mention this is with master 2.8 build

Clive s wrote: ...I have metric in the TRAJ ini I do have G21 to the preamble under preferences

I forgot to mention this is with master 2.8 build

Do you really mean that even with metric in TRAJ you get a G20 ???
This is not affected by lcnc versions. The only reference is TRAJ section unless no inifile is specified then it defaults to imperial

Fern