Klarinet Archive - Posting 000804.txt from 2000/03

From: Lars Kirmser <syrinx@-----.com>
Subj: Re: [kl] thread standards (tap for post body)
Date: Fri, 24 Mar 2000 22:20:58 -0500

Hi again Doug,
An 8-28 clearly doesn't exist in the standard ISO/Unified system, however,
you may have a metric 4 - 0.7 thread which is close to an 8-32. I have
recently published an article in THE WOODWIND QUARTERLY Issue #19 on
understanding thread sizes and how to know which Unified are silimar to, or
nearly interchangable with Metric sizes. If you know of someone who
subscribes to the WWQ, borrow their issue; I have included some helpful
comparitive charts.

Best Regards, Lars Kirmser

At 03:08 PM 3/24/00 -0800, Doug Sears wrote:
>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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