Re: [CAD_CAM_EDM_DRO] Re: Thread milling!!

Jon Anderson wrote:

> Jon,
>
> Who was your source for that cutter, and what pitch range does it have?
> The one MSC sells for a 5/8 thread is .500 in dia.

It was from MSC, part # 81262164
http://www.mscdirect.com/IWCatProductPage.process?Merchant_Id=1&Section_Id=726&pcount=&Product_Id=351690&SearchFlag=
currently at $42.10. It will do anything over about 3/8" diameter,
and about any thread of 20 TPI or finer.

Since I haven't done any large amount of threading over 1/4", I couldn't
justify a single-pitch thread mill. At $42, this was a fairly reasonable
unit. I really haven't used it much, as a standard tap is a lot faster.
I bought it once because I didn't want to buy a special tap (something
like 3/8-28 UNS) for one project, but then a flyer came in from Grand
Tool, I think, with about 20 pages of UNS and other special taps for
bargain prices. But, sometime I will probably have a need to thread
something large with a fine thread, like camera lenses or something,
and it will come in real handy!

Jon