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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090217/769aabef/attachment.html>
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