How would you pocket this?

[danielm]

I need to pocket the rectangle but stay away from the circle.

 

Thx.

[Rstewart]

Chain the Inside of the Rectangle, and the outside of the circle.... then proceed with with your toolpath like normal.

[jeff]

Have you tried Dynamic Area Mill?

[danielm]

I'd use it Jeff, but the machine I'm programming for has limited memory.

[K2csq7]

I'd use it Jeff, but the machine I'm programming for has limited memory.

By using the filters you can get the code to be pretty small sizewise.

Just leave a bit more stock than what you have your filter set to.

Dynamic is the way to go.....

[danielm]

Rstewart, this is the toolpath I get when I chain the rectanle, then the circle.

[jeff]

Rstewart, this is the toolpath I get when I chain the rectanle, then the circle.

 

Which toolpath are you using when you get this?

[danielm]

Just straight pocket. I did the area mill and it looks great. Just hope it fits into the machine.

[Colin Gilchrist]

Dan,

 

Try Dynamic Core mill. Leave .08 stock on the walls, and turn your filter tolerance up to .006, 2:1 filter ratio.

 

Make sure you add both chains to the Toolpath during chaining. (singe region, with 2 chains)

[Jayson Kramer]

I would use Collins way or I would use pocket facing so that it would over lap the outer edges but not violate the island.

[danielm]

Thanks Colin.

[MotorCityMinion]

"Leave .080 on walls."

 

Enlighten me. Why .080 ?

[Colin Gilchrist]

.08 was a total guess on my part. Most of the stuff Dan mentions cutting are Steel Alloys. I've seen him mention 4340 before. I like leaving extra stock to leave when I start increasing my filter tolerance. A good starting point is to use 10% of your Stock to Leave value for the total tolerance of your Toolpath filter. I recommended .006 for the filter, so .06 would be a good stock to leave value. I just said .08 because I thought this Toolpath might be cutting something tough, and thought a little extra material for finishing might be a good idea.

 

It also really depends on the size of the part.