[pianotech] Epoxy Filler

[Ron Nossaman]

On 1/24/2012 7:36 PM, Douglas Gregg wrote:
> The use of wheat flour with epoxy makes me wonder why you are using
> epoxy.

Because I keep it in stock for a number of different uses, so it's 
already handy. It cures overnight in any thickness without shrinking. 
The viscosity is adjustable to the application, and it doesn't dry out 
in the can.


>You might as well use wood dough.

Which I don't keep on hand because I have little to no use for it. It 
requires multiple layers and extended drying time for thick (deep) 
applications, and it shrinks as it dries. No thanks.


>Wheat flour is basically
> starch with no fiber (lignin) and as such has no inherent strength. It
> functions more as a fairing agent in this application; which it will
> do nicely but gives up much of the strength of  the epoxy.

Yes, I know what wheat flour is, thank you. And I already said why I 
chose wood flour and wheat flour as fillers in this instance, and it 
wasn't to maintain the strength of the epoxy. It's to fill gaps and 
still leave the epoxy plenty strong enough for this application, at 
little to no cost - which I think I also said.

No, this doesn't mean I intend to use it indiscriminately in every 
instance that I need to glue something together, but I'm quite pleased 
with the results for this application. On the off chance that someone 
else might like to try it and discover that it works for them in some 
specific situations, I posted it. Those that don't find it useful also 
have my blessing to not do it.

Ron N