G70-G71 issues

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21 Mar 2024 05:19 #296439 by 42.1
G70-G71 issues was created by 42.1
I spent a lot of time trying to get the hang of G71, couldn't get my part to run , kept getting a "not monotonic" error when I tried to use what I thought would be simple positioning.  It's pretty much a .375 circle at the inner edge (chuck side) of a piece of thinned down stock to have a smooth transition.  I could only get it to work by using the simpler G2 I have below and G71.1, which worked fine, but then G70 doesn't run the same path.  It wants to do more of the circle, which would create a nasty divot in the part.  I'm pretty far from an expert on coding this stuff, but I have done a few projects over the years, none beat me up so bad :)  Any good advice / help would be appreciated.

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g00 g20 g40 g49 g90



g54 g18



g00 z2.5
x.375 

o100SUB
G00 Z 2.5
X 0.25

G1 Z1.5 F300

g2 x.3750 z1.1768 r.1875
o100 ENDSUB

g71.1 Q100  x.375 z2.5 d.01 i.005 f100

//g70 Q100  x.375 z2.5 E0 D.005 f100

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21 Mar 2024 10:55 #296455 by Aciera
Replied by Aciera on topic G70-G71 issues
Please do not double post.
Have a look at the answer in your other post:
forum.linuxcnc.org/38-general-linuxcnc-q...sues-in-2-9-2#296415
The following user(s) said Thank You: tommylight

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21 Mar 2024 18:47 #296489 by 42.1
Replied by 42.1 on topic G70-G71 issues
Thanks, I was going through the list of options and thought I probably should have posted it here in hindsight.

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21 Mar 2024 23:18 #296518 by tommylight
Replied by tommylight on topic G70-G71 issues
Feel free to report any time you think something belongs somewhere else, we can move stuff around, and it is much better that double posting as that makes it very hard to follow what has already been answered.
The following user(s) said Thank You: 42.1

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