[pianotech] CA Glue

[Ron Nossaman]

This "white" glue/CA thing has disturbed me since it was first reported, 
as it seemed to be missing a sensible rationale for how it worked. For 
whatever it might ultimately prove to be worth, or not, I have a take on 
the water based/CA thing. Aliphatic resin (pva) glues are largely RF 
curable. The RF dose heats the glue (microwave), and accelerates the 
set. Heat supplied by another method ought to rationally do something 
similar, in any world I want anything to do with. Since the addition of 
moisture to CA glue triggers an exothermic reaction from the CA, it 
looks to me that this produced heat is what is accelerating the cure of 
the wood glue, and the CA has no other realistic function than producing 
said heat. Bruce Clark (WNG) tells me that the Franklin Assembly 65 glue 
that they sell is very responsive to heat curing, which would make it an 
ideal candidate for RF cured assembly processes. So... Being so heat 
cure friendly, it might well be an ideal symbiote to CA as a quick cure 
PVA glue field repair.

Just a passing thought.
Ron N