Steps to remove material of a desired design?

[litodrums]

Hello I am working on an object that will be CNC machined. I want to create on the top surface indentation of a specific shape. I am enclosing the file with 30 shapes typical which I want to delete and leave in indentation.

Am I proceeding correctly or is this not the correct way to achieve this effect?

thank you for your time

[jhackney1972]

I want to be sure, is this what you are looking for?  Model attached.

[litodrums]

Hello and yes this is what I want to accomplish. I'm not sure of the steps involved. 

thank you

[jhackney1972 · Accepted solution]

It was only one command.  Open the Combine command, select the base body as the first pick and then left click drag from left to right to form a window around all of your discs.  Select Remove for the operation and your got it.

[litodrums]

Thank you very much John I appreciate it very much.

Michael