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Occasional tool paths drag through stock when moving from one contour to another

sprior913
Advocate

Occasional tool paths drag through stock when moving from one contour to another

sprior913
Advocate
Advocate

I was playing with the Nester script and generating CAM toolpaths for a test project (nothing I intend to actually build), and when I simulated the CAM toolpath I noticed something that I have seen before - sometimes the path seems to not retract all the way above the stock and drag partially through the stock when traveling from one countour to another.  In this example this only happens in one place where you can see a vertical line between the two rectangles on the right.  All the other travels for this model seem to retract just fine.

I've attached the f3d file for this model.  Is this something I'm doing wrong or maybe a bug?  Since it only happens in one spot I don't see how it would be user error, but who knows.

 

 

drag.JPG

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HughesTooling
Consultant
Consultant

On the linking tab unselect Keep Tool Down.

 

Clipboard01.png

 

Mark

Mark Hughes
Owner, Hughes Tooling
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sprior913
Advocate
Advocate

Thanks, but then my next question is why does Fusion do this by default - does it make sure to use the max depth setting when taking that shortcut through the material?  Is it pretty much always safe to leave that feature on?

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sprior913
Advocate
Advocate

Or am I just doing it wrong by selecting unconnected paths for a single contour operation?

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LibertyMachine
Mentor
Mentor

I believe if you hover your mouse over any text field (such as in Hughe's screenshot; the Safe Distance field) and right click you mouse, you can "Make All Default" and that will set the behavior of the "Keep Tool Down"


Seth Madore
Owner, Liberty Machine, Inc.
Good. Fast. Cheap. Pick two.
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sprior913
Advocate
Advocate

Thanks for the tip, the big question now is whether I should be leaving it on or not and whether I'm misusing the contour function by selecting disconnected contours in a single operation.

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LibertyMachine
Mentor
Mentor

I wouldn't say that you are "misusing it", I do the same myself. That's not saying that is the right way, but I've not heard or read otherwise


Seth Madore
Owner, Liberty Machine, Inc.
Good. Fast. Cheap. Pick two.
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Steinwerks
Mentor
Mentor
No, multiple contours in a single toolpath is a strength, IMO. That said, the stay down function is being misunderstood here, and can be a boon in multiple-contour operations, but in this case is hindering the desired behavior. Shortening the Maximum Stay Down Distance will help.
Neal Stein

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