How to make this

julian_sporny

HI, I started with onshape fiew days ago. I want to make in this model little indentation inside this thing. Once I did it but now I don`t even know how I did that. I it to be deep in 3mm. Then I want to separate this in half. 

robert_scott_jr_

Hello Julian. We can't see your 'thing'. Please post a link. - Scotty

julian_sporny

Oh sorry! I added a screenshot but there is no any here. Here is the link: https://cad.onshape.com/documents/182e7a03ad0a0e8253b98b26/w/685d21a0ac6b610209b3caa8/e/1b50d474283e891ee05f3592?renderMode=0&uiState=64f8fa861cefe56a02362ba3

glen_dewsbury

Is this what you mean by indent?
https://cad.onshape.com/documents/45d9964df262d79a57dc45ab/w/5fd88abd30e414e158fb5e71/e/1520c9ff623eec13538cdff4