Reading Chamfers

I've got a short post today.  We need to talk about chamfers and how the test shows them.  We all know that there are multiple ways to dimension a chamfer on a drawing.  The exam uses a couple of different ways.

Here are a few ways you will see chamfers on the exam.

The key to chamfers on the exam is to know where the reference plane is.  If you are shown a 45° chamfer, the orientation does not matter, but when you are given a 60°, the reference surface becomes very important.  Here is an example for defining an edge chamfer.

Also, one word of caution, I've had several instances, more in the past, where chamfers flip on you in patterns or mirrors.  Be wary of the chamfer...

Until next time,

Bryan