Re: [Harp-L] Re: Embossing v Burnishing

[Joe and Cass Leone <leone@xxxxxxxx>]

On Jan 2, 2009, at 5:20 PM, HTownFess wrote:

> Well, I call it an overbend if it's not specifically an overblow, but
> never mind me, that one did not really catch on :-).  Joe is right to
> point out that swaging is a catch-all term for a lot of cold metal
> working, but it seems to be used mainly with tubing, rods, and
> interference fits.  Anyone who's done much embossing of reedslots will
> tell you that interference fits are not fun there.  I think "staking"
> was proposed back in 2000, since staking tools can be useful for
> embossing, but again, you are not fixing something permanently in
> place, you are raising a new edge that is meant not to touch the
> reed.  Joe, when you emboss a reedslot, the reedplate does wind up
> thinner

Sure, it's a wee bit thinner RIGHT in the area you are pressing on.

> . . . on the "upper" side of the boss, the side closest to the
> reed.  The boss is formed by pushing from one side, true, but much
> seems permitted in embossing, anything that forms the element that's
> in relief.  Relative to the sides of the reedslot, material is pushed
> *out* into the slot, and that's the raised boss, and it doesn't have
> to be vertical like mountains: up's a tricky word here.

Ooookay, I follow you here. When you speak of 'raising' metal, you  
are speaking in reference to the slot in CROSS section. Ok, I'm with  
ya. I was viewing the reed plate looking DOWN.

>   A boss is raised on each wall of the reedslot, and that's what  
> cuts down the
> clearance.  Because it's a pointy, sharp boss, it affects the tone in
> ways that have been remarked onlist.

I understand. And yes, I will go along with that.
> Joe says, <<Soo, when a person draws a sharp object along the sides of
> an opening
> making a furrow or cut, it would seem that they are embossing. In
> actuality, they are swaging. >>
>
> No, I called that swaging, not embossing, check my third paragraph.

I know YOU called it swaging. That's why I used "It would seem",  
because to some people it may very well 'seem'. Hence, different  
approaches to the same solution. :)
> Seems to me that ca. 2000, somebody prominent just gave up and started
> calling it "sizing" the reedslot: fitting it to the clearance you want
> by whatever means you care to employ.

That was the famous Dr. Antaki (from Mt Royal Blvd..up the hill from  
where I was born). Actually, I think he used a different word.

>   There's always that option.  To
> me, embossing means the common method of pressing a rounded tool into
> the square-edged slot and running it along to raise bosses along each
> side of the slot to reduce reed clearance.

Okey, in YOUR case, since you are talking 'in profile' or 'in cross- 
section', I can hardly dispute that. This is why most machined pieces  
are given from several views. In my particular case, I was imagining  
myself at my desk, looking down on the reed plate, centering my  
magnifying Dazor lamp on the part, and pressing down on the part.
> I see the point about swaging, especially when it's swaging to create
> the kerf on a saw blade, but even then they seem to be using a mandrel
> and a die that's rotated. I just don't think it's as specific or as
> clear as embossing is for what people commonly do . . . plus I helped
> shove embossing into circulation a few years ago and it's gained
> traction since, as noted below.

Cool by me   :)
> I've certainly learned a bit this time--good measure of what's become
> available online since the turn of the century terminology tussle.

Oh Steve. I don't see anything on the list as a tussle. We're all  
after the same thing....keeping on harpin on.

Smo-joe
> Stephen Schneider
>
> On Jan 2, 2:17 pm, "jcolbysp...@xxxxxxxx" <jcolbysp...@xxxxxxxx>
> wrote:
> > I vote we call it embossing because most people know what that  
> > means.  It may not be an accurate term, but we know what it  
> > means.  Just like the term "overblow".
> >
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