[pianotech] Dye for CA glue?

[CHARLES BECKER]

I seem to remember when I was working with a luthier that there was a black CA glue.  Sorry I don't recall the brand.  Check Luthiers Mercantile or other luthier supply houses. (National Balsam perhaps)
  ----- Original Message ----- 
  From: William Monroe 
  To: grahampianos at yahoo.com ; pianotech at ptg.org 
  Sent: Tuesday, February 17, 2009 8:03 AM
  Subject: Re: [pianotech] Dye for CA glue?


  Hi Greg,

  I'd suggest either analine powder, or trans-tint dyes (alcohol soluble).  Either one should be able to be had in any of your favorite flavors.  Hmmm.  I suppose it might cause a reaction with CA.  Try little first would be my MO.

  William R. Monroe





    I'm preparing a piano for our chapter's "Gross Anatomy" session, and would like to find a dye or universal colorant of some kind for CA glue and for nitrocellulose lacquer.  I want to make it easy to see how far CA penetrates the pinblock, and how far lacquer penetrates hammers.

    The lacquer will probably take the universal colorants I already use for shellac tinting, but I'm thinking that would probably turn the CA to stone.  I didn't try it yet.

    Any chemists in the house?

    Thanks,

    Greg Graham




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