[TPIN] Bending mouthpieces

[Dwight Bird]

Oops, in the second quote, I meant to say "it wouldn't fit snuggly in the
receiver" not the vise.

_______________
Dwight Bird
Kaysville, UT

-----Original Message-----
From: tpin-bounces at tpin.okcu.edu [mailto:tpin-bounces at tpin.okcu.edu] On
Behalf Of D. Michael McIntyre
Sent: Saturday, July 29, 2006 11:53 PM
To: TPIN, 
Subject: Re: [TPIN] Bending mouthpieces

On Sunday 30 July 2006 1:22 am, Dwight Bird wrote:

> This method looks like it would word.  A couple of considerations.  First,
> I don't think you need a real stout vise for it.  Brass is really pretty
> soft compared to other materials.

This is true, but it's also short and thick.  Bending a 10' copper pipe is 
easy.  Bending a 5' pipe is harder.  Bending a 2" pipe is getting closer to 
impossible.

Instinct says I'd want something with some real squeeze to it.  I might have
a 
disproportionate concept of how heavy the walls are based on the weight of 
the material in the rim and cup though.  I've never actually done a cross 
section of a mouthpiece, and don't know exactly how the bulk of the metal is

arranged in the shank.

That might be a nifty experiment, actually.  Though the jaws on my bandsaw 
wouldn't hold it in position for such a crazy undertaking.  I'd have to rig 
something up, and it's not remotely worth it just to amuse myself by 
pointlessly destroying something I have a surplus of.

> Next, make sure that the placement of 
> the dowel at A is at a point on the mouthpiece that would be outside of
the
> trumpet mouthpiece receiver.  Otherwise you might deform it and it would
> fit snuggly in the vise.

That is a very good point, and my lame ASCII drawing was flawed in that 
respect.

-- 
D. Michael 'Silvan' McIntyre  ----   Silvan
<dmmcintyr at users.sourceforge.net>
Linux fanatic, and certified Geek;  registered Linux user #243621

Author of Rosegarden Companion http://rosegarden.sourceforge.net/tutorial/
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