Chamfer mandrel order

[Thepopo]

Got my APW mandrel and die set recently. Looks amazing! The holder really adds a nice touch. Question, do I chamfer and deburr first or mandrel then chamfer deburr?

 

[straightshooter1]

Got my APW mandrel and die set recently. Looks amazing! The holder really adds a nice touch. Question, do I chamfer and deburr first or mandrel then chamfer deburr?

It depends. When you run the mandrel you change the ID of the neck and mouth. That change effects the chamfer and that may or may not be an issue at all. For me, I use a three way trimmer and the way I've got it set up, I'll use the trimmer as my very last step to not only get consistent trim lengths, but also consistent chamfers. It's up to you to determine when based on your process and keep the process consistent.

 

[swamper2]

I trim and champfer then mandrel size. It gets the burr out of the way for a smoother finish.