One other thing to consider is that the lines in the dxf file will be
generated in the ORDER that they appear in the drawing file. The CAM
program will pick up the SAME ORDER from the dxf file. So if a
square is being cut the order of the lines can be changed in the CAM
program so that the cut begins at the top right, goes to the top
left, then the bottom left then the bottom right and then back to the
top right (or any desired path). In the above case, the cutter comp
would all be left (G41)if inside and right (G42)if outside. The
important thing is to make sure that the cutter path is all
sequential and that you determine the left or right by looking in the
direction of the cut for EACH line in the path as indicated in the
previous posts. Sounds like you understand this from your post.
Cutter comp really makes things alot easier than changing the tool
path manually or in drawing file because of the variability in cutter
size (what you have and resharpened undersize cutters). Good luck.
Don
--- In mach1mach2cnc@..., "Jeremy Taylor" <jt@j...> wrote:
Somehow I see this in my mind, and the cutter would have to be to
the right
of the line when it is top left, but when it moves to top right,
the cutter
would need to actually be on the left of the line. Look at the
machine from
where I SIT.
Now If I imagined that I was riding on the cutter, and if every
time the
cutter changed directions, I was swung around so that I was always
facing
the direction the cutter was traveling, then ... THEN I could see
it as
always being to the right.... ok ok I think I'm starting to grasp
this.
JT
JT.
No this is wrong.
Re read Mike reply #7682
Don't think of the cutter being above or below the line, this will
confuse you.
Think in terms of what side of the line is the cutter when the
tool
is moving forward.
If you are cutting an internal square and you start top left
corner
and move to top right the cutter will always be to the right of
the
line no matter what side it is cutting.
John S.
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