Machinery Handbook? Threading Section?
Mike, do you mean to tell me there is actually a methodology written as to the proper way to do this stuff?
And hear I thought you just went on the intranets and you were automatically an expert.
I get in this discussion with guys a lot who think a super tight "micrometer" fit is a great idea for stainless. Hell the stuff galls if you look at it crosseyed.
Then they find out what it costs to bore a barrel stub out of an action and fix the threads.
There are classes of threads for a reason, and to paraphrase Jackie's often quoted point: figure out what you want/need and then the best way to get there.
I am not saying that years of experience are not the most valuable asset you can have, and hardly a day goes by that I don't learn something new/better/wrong
when I'm running the machines. That to me is the great joy in machining! Your always learning (if your paying attention).
I do get the impression though that a lot of people would be better off learning the basics, (preferably on manual machines) and the right way of doing things first.
Grinding cutters, feeds & speeds, MEASURING!
As my Machine Technology prof told me many years ago, play with that mic for a few weeks and then come talk to me bout tenths and will see.
As to the OP's question I leave them as reamed unless to Dave's point they have some of those "horrific rings" (the ones you can't feel or detect) and then I hit them with a quick touch up with 320 and cutting oil. Now if you can feel them you need to reevaluate your process or your reamer.
I am developing a love/hate relationship with borescopes, they are making everyone an expert on chambers.
One mans opinion, worth what I charge for it.
Greg
