Rest Machining inside a pocket

[synthcRLF48]

I'm trying to cut some holes into the bottom of a block of wood after a pocket operation has hollowed it into a shell.  I need a way to let Fusion know that stock has been removed by the pocket operation and that it doesn't need to do 16+ passes just to get down to the actual stock.

Rest machining seems like the proper way to do this, but I can't get it to work at all with any of my slot, bore, and 2D contour toolpaths:

1. I created a new setup and selected Continue Rest Machining and that did nothing.
2. I tried turning on rest machining in the 2D Contour toolpath (the only one that has this option) and that created an empty toolpath.
3. I tried changing the stock to use the hollowed out model, but it appears that no matter what I do, the stock remains a rectangular box (it won't recognize the pocket).

What do I need to do to get this to work?  Project file is attached.  Thanks.

 

[HughesTooling · Accepted solution]

Just select the inner face as the top height.

[HughesTooling]

Also noticed you have a stack of NC Programs. You don't need to keep create new ones when you post, you should just right click on the NC Program and post or edit if you need to make a change.

[HughesTooling]

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@synthcRLF48 wrote:

Rest machining seems like the proper way to do this, but I can't get it to work at all with any of my slot, bore, and 2D contour toolpaths:

1. I created a new setup and selected Continue Rest Machining and that did nothing.
2. I tried turning on rest machining in the 2D Contour toolpath (the only one that has this option) and that created an empty toolpath.
3. I tried changing the stock to use the hollowed out model, but it appears that no matter what I do, the stock remains a rectangular box (it won't recognize the pocket).

What do I need to do to get this to work?  Project file is attached.  Thanks.

 

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2D OPs are not stock aware so your steps 1 and 2 above will not have any effect on a 2d op. The rest machining in 2d contour for example is just to clean out corners with a smaller tool. So if you take a cut with a 20mm cutter then finish the corners with a 6mm, you enter 20mm as the tool diameter under rest machining and Fusion will create toolpaths where the 20m cutter would not fit.

[synthcRLF48]

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@HughesTooling wrote:

Just select the inner face as the top height.

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This seems to have worked.  Thanks.