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For starters, if you intend on using a .062" endmill to rough out that entire area...you're gonna have a rough time. Unless of course, this part is plastic or wood?

 

Here is your file back with a couple new tool paths. Your selections were a little bit off....

On the geometry tab, you had boundaries set to None. Usually this work for general purpose stock removal, but when you want to do targeted machining, you need to either A) define where to cut through geometry selection or B) define Stock Contour to limit where tool cuts.

Your Heights were set to Stock Top and Model bottom, so it's going to go everywhere you let it. In 2D and 3D Adaptive, you can also control where the tool goes by controlling your Heights. In this case, I'd prefer to pick the top face of the pocket. (not top of model, not top of second pocket)

 

Selecting Model doesn't have really any impact in this scenario. It's there for when you are dealing with multiple components on-screen or if you have patches and filler bodies to aid you in the CAM process. I deselected those.

 

So, select your geometry to cut, define your heights, de-select the Stock Contours and you are pretty much there

 

 

 

All that being said; This is one area where I still prefer 2D Adaptive. While it's not model aware, it is very quick to program and often gives satisfactory results. In cases where you have have to haul off a large portion of material up to an edge, I find that 2D Adaptive does just as good (if not better sometimes) as 3D. Your mileage may vary

 

 Here is a screencast walking through what I did. If you've not watched these before; You can click on the lower right corner and o full screen. It also captures mouse and keyboard clicks so you can understand what I did to achieve a certain result.

 

 

 


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