WARNING: Zero lenght arc

[Jimic]

When I verify one job.

I have this Warning shown:

 

WARNING:

zero Lenght Arc.

 

After I click enter and the verification came out fine.

 

What is this WARNING ???

[Guest]

When you figure it out let us all know

 

This is a warning that seems to come up but has nno effect and the cause is unknown, AFAIK.

 

I see this all the time and frankly, I ignore it.

[Jimic]

Good Lord !!

 

I was so worry that I have done somthing wrong. In fact, I was afraid to send the work out to the machine until I find out the problem.

 

Now. I have a peace of mind. THANKS.

 

Someone out there might know the answer. What caused the warning .

[Matthew Hajicek - Singularity]

I've noticed what appears to be a pattern with this. It seems to happen when I have contour toolpaths that have inside corners too small for the tool to go all the way into. The more such toolpaths I have, the more zero length arc messages pop up when entering verify. It's annoying, but doesn't seem to cause any harm. Putting a fillet just larger than the tool radius in those corners seems to prevent the error message, and reduces chatter as well.

[Guest]

The only problem with that Matt is I have round holes I am chamfering and I ma getting on those.

 

There are no square corners there

[gcode]

quote:

---

There are no square corners there

---

No, but there may be some impossibly tight corners

in your lead-in/lead-out moves

[Rick Henrickson 65]

matt is right if you have .375 corner rads and use a .75 endmill to finish the contour it will give you that alarm in the verify!

[Greg Williams]

Ah yes Bruces's fav message