pic: table shot of the wheels... 254/968

[Philip W.]

My guess is that if you do a contour, you have to make a breakthorough cut and go through a piece of wood or something that the aluminum is mounted to. Mounting the aluminum requires so much effort, especially for all those wheels, when you can just do what's done in the picture and then flip the pieces upside down and face it all off.

I'm no expert machinist; I started learning how to use CNC a week ago. Correct me if I'm wrong, please.

[Andrew Blair]

Originally Posted by Philip W.

My guess is that if you do a contour, you have to make a breakthorough cut and go through a piece of wood or something that the aluminum is mounted to. Mounting the aluminum requires so much effort, especially for all those wheels, when you can just do what's done in the picture and then flip the pieces upside down and face it all off.

I'm no expert machinist; I started learning how to use CNC a week ago. Correct me if I'm wrong, please.

I didn't really mean to cut all the way through the piece- just contour the inside edge, then do whatever machining operations later to free the wheel from the blank. I would imagine that for these wheels, a contour to the same depth would take far less time than the full pocket they're taking out of the wheels. And save some more of that precious 7075!