[pianotech] A new kind of CA glue

[Euphonious Thumpe]

Thanks, Ed! 
     I noticed this stuff a couple of months ago, and asked for techs to, please, test it.
    Thanks to you, my "prayers" have now been answered! 
    ( But I'm still wondrring how it might perform on slight rib-to-soundboard separations, where getting glue into the joint is difficult. Regular ultra-thin CA- because it seeps into tiny spaces--might still be better for this, as per your comments regarding viscosity. ) 
     Euphonious Thumpe


--- On Sun, 5/31/09, Ed Sutton <ed440 at mindspring.com> wrote:

> From: Ed Sutton <ed440 at mindspring.com>
> Subject: [pianotech] A new kind of CA glue
> To: "Pianotech List" <pianotech at ptg.org>, "College and University Technicians" <caut at ptg.org>
> Date: Sunday, May 31, 2009, 9:54 PM
> 
> 
>  
>  
> 
> 
>  
> Gorilla brand Super Glue
> "contains tint rubber 
> particles which make it impact
> resistant."
>  
> My first tests confirm
> that Gorilla Super glue and 
> Super glue gel have unique working qualities of value to
> piano 
> technicians.
>  
> 1) Bench top test of
> pinblock scrap with tuning pin 
> loose in the hole. I swabbed the hole with Gorilla Super
> glue and let it harden, 
> then drove the pin. It felt very tunable, not
> "crackling," and after about 25 
> times back-and-forth swings of the lever (about 45 degree
> swings), it still felt 
> the same. 
>  
> 2) Dog chewed corner of
> ebony pedal box. Made a 
> "mold" by taping gummed package tape to the box,
> and squirted Gorilla Super glue 
> gel into the mold. Sprayed kicker and let it harden for
> about 30 minutes. Peeled 
> off the tape and pared it with a chisel to fit the contour.
> Sprayed with primer 
> and black lacquer. Good result.
>  
> 3) Drilled a 3/16"
> hole in pinblock scrap, filled 
> with Gorilla Super glue gel, and inserted a #7 bridge pin,
> vertical, 3/8" of the 
> pin sticking out. Sprayed with kicker and let
> harden for about 
> 5 hours. Pared the top flush with a chisel and then
> tapped the pin with a 
> hammer until it was bent 45 degrees. The glue collar
> didn't crack or 
> chip.
>  
> This stuff seems to
> perform as advertized. It is 
> strong and more impact resistant than standard CA. The
> "thin" glue is a bit 
> thicker than standard thin CA, and the gel is
> "gel." Both take somewhat longer 
> to harden than CA glue, which I find comfortable. It is
> easy to carve at first, 
> harder to carve after a few hours.
>  
> I think this glue has
> good potential for use 
> in piano work, such as in repairs of music desk
> hinges, loose key 
> tops, possibly for loose and popping tuning pins, and
> bridge and bridge pin 
> repairs.
>  
> Available at hardware and
> home supply stores. 
> (Wherever Gorilla Glue is sold!) Use at your own discretion
> and let us know how 
> it works.
>  
> Ed
> Sutton 
>