<HTML>In a message dated 6/26/2002 9:54:30 AM Pacific Standard Time, joegarrett@earthlink.net writes: <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Subj:Re: Buldoc wood glue/Dale Erwins comments Date:6/26/2002 9:54:30 AM Pacific Standard Time From:<A HREF="mailto:joegarrett@earthlink.net">joegarrett@earthlink.net</A> Reply-to:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A> To:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A> Sent from the Internet Hi Joe</BLOCKQUOTE> I agree The cold glue is compatible with old hide. I think it reactivates it and melds with it.   I think the reason for the failure rate of tightbond over old hide  as you say Joe is this,  when  tightbond is applied over old hide glue  the tightbond will not stick to the old hide. The whole thing will however turn to a mess and then the tightbond and the hide glue scrapes off easily in one gooie convoluted mix. WHich is a good way to get old hide glue to scrape off easily. Once clean use whatever glue you wish.   But I don't think this mixing of glues would make for a strong glue joint at all.  JMHO >>>>>>>>Dale Erwin>>>>> <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">I would have to agree with Dale, on this one. I've been using "Cold Hide Glue" for many years and have yet to have a failure. I use it on separated Upright pinblocks, as it is most compatable with the original glues used. Whereas, titebond type glues, I have noticed, have a high failure rate when used in conjunction with hide glues. Just my experience. Joe Garrett, RPT, (Oregon) </BLOCKQUOTE> </HTML>