Mechanical Music Digest  Archives
You Are Not Logged In Login/Get New Account
Please Log In. Accounts are free!
Logged In users are granted additional features including a more current version of the Archives and a simplified process for submitting articles.
Home Archives Calendar Gallery Store Links Info
MMD > Archives > February 1998 > 1998.02.01 > 08Prev  Next

Glue Edge Cuts the Pouches
By John A. Tuttle

Hi All,  In Karl Ellison's posting he says:

> When the glue to attach pouches to their boards or blocks is allowed
> to come to close to the edge of the pouch cavity, over which the
> leather must flex when it collapses, the dried glue can form almost
> a 'knife edge' which because of the 'slamming down' of the pouch
> when it is collapsed can ultimately begin to cut through the rather
> thin leather - and it weakens on those circular creases until it
> begins to separate.  Unless the edges of the pouch cavities are
> radiused, or the glue kept well back, this failure can happen even
> where the air quality is as sweet as in a woodland glen."

This is not new, but does show an extreme lack of understanding
with regards to correct rebuilding techniques on the part of the
rebuilder/s.  It is imperative that only a thin layer of glue is
applied by finger to the area to which the pouch is to be placed.
Secondly, a vacuum operated pouch tool should be employed so that the
correct 'dish' is imparted to the pouch BEFORE it is placed.  Too often
I have seen pouches that were dished AFTER the pouch was placed over
the pouch well.  This 'faster' method drags the glue into the flexing
portion of the pouch reducing it's 'working flexible area' and causes
the pouch to fail prematurely.

John A. Tuttle (

Key Words in Subject:  Cuts, Edge, Glue, Pouches

Home    Archives    Calendar    Gallery    Store    Links    Info   

Enter text below to search the MMD Website with Google

CONTACT FORM: Click HERE to write to the editor, or to post a message about Mechanical Musical Instruments to the MMD

Unless otherwise noted, all opinions are those of the individual authors and may not represent those of the editors. Compilation copyright 1995-2024 by Jody Kravitz.

Please read our Republication Policy before copying information from or creating links to this web site.

Click HERE to contact the webmaster regarding problems with the website.

Please support publication of the MMD by donating online

Please Support Publication of the MMD with your Generous Donation

Pay via PayPal

No PayPal account required

Translate This Page