Steve left a comment on my last post where I scored a hell of a deal on a batch of Chucking Reamers saying that he has been following along with my misadventures but because he basically does wood working, is having trouble picturing what it is I am talking about sometimes. I get that, trust me. I am pretty new to this stuff myself and have literally spent HUNDREDS of hours watching Youtube videos trying to educate myself.
My advice to anyone having trouble imagining what I am trying to teach myself here is to do the same thing, get on Youtube. There are literally MILLIONS of machining videos out there and some excellent tutorials if you look.
I found this guy Stuart De Haro a couple of years ago and he has some EXCELLENT tutorials on the very basics of machining, the tooling and how to use them.
Instead of me trying to explain how reamers work, as Steve says, a picture is worth a thousand words, I figure a good video is worth a million.
This is only about 5 minutes long but there is a lot of great info in that 5 minutes. This guy knows his stuff.
You can also head over to Budget Machining for some great content. I have been a fan for years!