Klarinet Archive - Posting 000790.txt from 2000/03

From: "Doug Sears" <dsears@-----.net>
Subj: Re: [kl] thread standards (tap for post body)
Date: Fri, 24 Mar 2000 18:08:49 -0500

Thanks for replying; you're the only one so far. 6-32 or 8-32 would make a lot
of sense, but this one is clearly not 8-32. I had said it looked like 8-24, but
on closer inspection I think it's 8-28. Where on earth would I get an 8-28 tap?
Do I have to make my own?

--Doug

-----Original Message-----
From: Lars Kirmser <syrinx@-----.com> wrote:

>There are two standards with regard to domestic clarinets: 6-32 and 8-32
>(post thread on soprano clarinets)
>Best Regards, Lars Kirmser THE WOODWIND QUARTERLY AND MUSIC TRADER
>
>At 12:31 PM 3/23/00 -0800, Doug Sears wrote:
>>I have a need (the reason why is a long story) to mount some hinge posts on a
>>Bundy clarinet (the older, large-bore model, Bb soprano). So I called
>Ferree's,
>>and they can order the posts from Selmer, and Ferree's even has a drill with
>>countersink for starting the hole the post goes into. However, they don't
>know
>>about the tap for threading that hole. It looks to me like maybe an 8-24
>>bottoming tap, a nonstandard thread you couldn't buy at any normal tool
>store.
>>Ferree's suggested I call Selmer, and the guy there didn't know either. He
>said
>>he'd check with their repair techs and call back, but he didn't sound very
>>hopeful. The Erick Brand repair manual refers only to "Post Taps (RT183)
>No. 8
>>or No. 9". I think it's weird that Selmer sells posts but provides no
>means for
>>mounting them.
>>
>>I'm left with a specific question, what tap is this and where do I get it,
>and a
>>lot of more general questions. The threads on the hinge screws are 1-56,
>right?
>>(also nonstandard: NF is 1-72, NC is 1-64) Do all the U.S. makers use
>these same
>>threads, or do they vary from make to make? Do the French manufacturers use
>>metric threads? Is there a list somewhere of these numbers (thread sizes for
>>post bodies, threads on hinge rods, diameter of hinge rods, etc.).
>>
>>Before somebody lectures me on how hard mounting posts is, let me say that I
>>know that posts are attached in the undrilled state, then drilled and
>faced for
>>the specific key, and I know what it takes to do that.
>>
>> --Doug
>>----------------------------
>>Doug Sears dsears@-----.org/~dsears

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