Hello, guys!

I have been running my waterjet cutting machine with EMC for a while
now (currently that is version 2.4.3.1) and I have gathered few
questions about the way, how EMC interprets the g-code.

The main issue is that sometimes I receive this error message:
"Arc move in concave corner cannot be reached by the tool without gouging"

It also indicates the number of the line in the g-code, which is near
the one, causing error. So I found that in the following piece of code
the G3 move was the problem:
G1 X+115.175 Y+245.013
G3 X+118.786 Y+245.339 I+1.484 J+3.720
G1 X+120.236 Y+246.394

I have G41/G42 tool diameter compensation commands included as well as
there is M6 T1 command in the beginning of the file and in the tool
table I have saved the size of the water jet as a tool number one, so
that EMC compensates the kerf size. The confusion is caused by the
fact that saved diameter is 1.1 mm and in the code above we can see
that radius of the G3 move is larger than half of the tool's diameter,
which has to be offsetted.


I just received also this error message:
"Straight feed in concave corner cannot be reached by the tool without gouging"
It indicated that the error is around line 24, so here is the part of the code:
G1 X+167.031 Y+46.741
G1 X+167.643 Y+46.983
G1 X+168.223 Y+47.330
G1 X+168.364 Y+47.433
G1 X+168.364 Y+23.726    <--line24
G1 X+147.289 Y+23.726
G1 X+147.289 Y+54.982

The code consists of very small G1 moves. Unfortunately the CAD
drawing consisted almost only of splines, which are not very welcome
by my CAM application, so it converted the splines in very small
straight segments. That is why that file consists of 16344 lines, so I
do not see an option of manual correction of the code.

Can anyone explain, what is that EMC does not like about the g-code
and what can I do to correct it?

Thank You in advance!

Viesturs

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