[pianotech] Epoxy Filler

[Barbara Richmond]

Hey, Red Green is going to be at the Peoria Civic Center. Has anyone caught the one-man show? 

Barbara Richmond, RPT 
near Peoria, Illinois 

----- Original Message -----
From: "Paul T Williams" <pwilliams4 at unlnotes.unl.edu> 
To: pianotech at ptg.org 
Sent: Tuesday, January 24, 2012 3:27:57 PM 
Subject: Re: [pianotech] Epoxy Filler 

Funny , Will! I love Red-Green! We don't get it anymore in NE. It's in Seattle, though! Nice over Christmas break to see it. 

I like the duct tape demolition ball to the old Ford Taurus, so you don't need a third wheel. It actually worked! LOL 

Duct tape works for all kinds of things...including a dam. Not Hoover or anything...just sayin! 

Keep yer stick on the ice, eh? 

Paul 



	From: 	"Encore Pianos" <encorepianos at metrocast.net> 
	To: 	<pianotech at ptg.org> 
	Date: 	01/24/2012 03:20 PM 
	Subject: 	Re: [pianotech] Epoxy Filler 




Duct tape dams? That calls for a highlight feature on the Red Green show! 
That surfaces periodically on PBS around money begging time. It's about a 
couple of good ole boys from back, back, backwoods Maine, whose solution to 
everything is duct tape. They once made a wide body SUV by duct taping two 
old Econoline vans together. 

Will 

-----Original Message----- 
From: pianotech-bounces at ptg.org [ mailto:pianotech-bounces at ptg.org ] On Behalf 
Of Ron Nossaman 
Sent: Tuesday, January 24, 2012 3:27 PM 
To: pianotech at ptg.org 
Subject: [pianotech] Epoxy Filler 


To whom it may concern, or anyone interested, 

Yesterday, I filled a set of rib mortises out in the shop, preparatory to 
routing new mortises for a new and considerably different rib set, and 
installed a cutoff bar, fish, and further belly rail bracing. I used 
thickened West System epoxy. In the past, I'd used maple floor (band saw and 
sander sweepings) for a filler and thickener. It works nicely to increase 
the volume of the epoxy, but I don't like how the epoxy drains out of it as 
it sits. Adding something of a smaller particulate, like high density filler 
or colloidal silica tends to keep the epoxy in the wood flour, but it seems 
like a waste of materials when all I want is a cheap filler and volume 
increase that doesn't separate and doesn't kill the strength and toughness 
of the epoxy altogether. So yesterday I tried good old non-exotic general 
purpose wheat flour. I used my wood flour for bulk, and enough wheat flour 
to make a peanut butter viscosity mix for bedding the cutoff bars and 
bracing, and more like yogurt to pour into the mortises and plate lag holes 
with my highly sophisticated duct tape dams. It handled beautifully, and the 
epoxy stayed suspended in the filler with no indication of it settling out. 

When I leveled everything this morning, I was very pleased with the texture 
of the cured mix. It's less brittle than straight epoxy, but still quite 
tough, and works as well as anything I've tried, better than most, and 
cheaper than almost anything. 

If you have a need, I recommend you give it a try. Self rising? You're on 
your own. 

Ron N 




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