Re: Reed plate swap-outs

["G." <gigs@xxxxxxxxxxxxxxx>]

> <quote>
> Date: Tue, 2 Sep 2003 21:15:25 -0700
> From: "Scorcher" <s_c_o_r_c_h_e_r@xxxxxxx>
> Subject: Reed plate swap-outs
>
> Is there any way to "make-up" Low-Octave Golden Melody's? I love my
> GMs, and I love Low D, E, & F keys....
> Can an MS or HM reedplate be subbed in there - maybe by cutting down
> the outer dimensions?
> That is to say: Are there readily available Low-Octave reedplates with
> the same reed spacing as the GM?
>
> - -Scorcher
> </quote>

Hello,
Assuming we are talking about handmade/classic models.
Special 20 and Marineband harmonicas are available in low keys.
Both model reedplates are wider than GM reedplates, but the reeds are placed
correctly - all three models use the same cell & reed sizes.
Whether you fit the SP20 or the MB reedplates you will need to:
* Cut or file off both left and right ends of the reedplates to fit.
* Drill large holes for the cover screw struts at each end.
* Drill and tap screw holes to line up with the GM comb holes.  2M, 2-56 or 1-56
are appropriate taps.  Stainless steel machine screws are probably preferable
for mitigating corrosion or seizing.

Marine Band reedplates have a groove for the covers, SP20s don't.  Although I
understand that given the choice you're better without the groove in terms of
improved air tightness - you may want to compare for yourself.

For drilling, if you can afford a bench press drill it'll speed up the process
and improve accuracy a great deal.  They're about US$95 new.  For the same price
you can get a belt & disk bench sander, they speed up sanding and grinding time
a great deal.  If you intend to do this regularly its worth the outlay, in
addition to an appropriate tap & hand held pin vice.

In my experience whilst soldering reeds allows quick and extreme retuning, they
impair reed response and vary in pitch over time.  Reed response and tuning are
two of the most important aspects of a harmonica IMHO.

It would be quicker/easier to fit new reedplates into a GM than to swap the
reeds into a GM reedplate as I suggested tongue in cheek to Tim a while back.
:)

All the best,
G.