Okay, thanks.
Looks like a test at these new settings will have to wait as something happened to my sheet metal file. All of a sudden it doesn’t recognize most of the inside rectangles when I do a post file.
Might have to start over from scratch.
Are you developing tool paths in Fusion 360?
And is it “discarding contours” is that the alert you’re getting?
Could you post the f3d file from Fusion 360 that’s failing you, if it is Fusion 360.
Yes developing in Fusion 360 and posting to FireControl.
I’m not getting any alerts but when I try to simulate, it only cuts one or two of the 16 rectangular cut outs then the outside perimeter.
I’ll try to post the file shortly.
Be forewarned though…I’m a novice to this and this was my first attempt to design with sheet metal rules.
Heres a link to the Fusion file. Download options are limited as I don’t have the paid subscription yet.
this link will walk you through the F3D export process.
This can be done with the free version .
the *.F3D file also contains the CAM data which I want to look over.
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Okay so I was able to export it but something else happened to the file thats really screwed it up. Here is the file but I don’t think its repairable.
Sheet Metal Chimney Base v10.f3d (504.2 KB)
I use the first F3D you provided.
I went back to the design workspace and turn on the flat pattern and turn off the 2nd sketch.
Return to the manufacturing space and update the current tool path. I reduced the finishing overlap and reduced the lead in and lead outs and selected a few Entry Positions. Now fusion generates a tool path.
here is a new F3D
chimney cap lf pete17 v4.f3d (486.0 KB)
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AMAZING, thank you so much. I’ll try it out in the morning. Cheers.
I never produced any G-Code with the file but I think the problem you’re having is just your lead in and the finishing overlap we’re just too big.
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Noted… I’ll let you know how I make out.
Thanks again
Yes, that is what we call @TinWhisperer when we need a manual from him. Other times… hmmm, well, there really aren’t any other times. We ALWAYS need a manual from him! 
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Hahahaha…
Okay so I created the G code but something isn’t right. It’s added the two loops (shown as orange) as cuts which shouldn’t be there.
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I see that too.
That must be some conflict with the keep nozzle down setting and the post processor.
I never post process anything without torch height control and I don’t use the keep nozzle down setting so I’ll have to do a little bit of investigating to see how this happened.
I did notice that you had the keep nozzle down setting active in your f3d file so I did leave those settings alone.
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Yes I read (or saw a YouTube) that if you aren’t using THC, to use keep nozzle down with the distance being the size of your tables maximum cut.
I use Keep Nozzle Down on everything I cut which is usually sheet metal. This however is my first time using sheet metal rules.
Why? What’s the advantage of that?
i removed keep nozzle down and it removed the odd loops.
chimney cap lf pete17 v5 without keep nozzle down.f3d (430.6 KB)
golden wo keep nozzle down.nc (3.9 KB)
this may show up better for you.
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