[pianotech] Epoxy

[Delwin D Fandrich]

Go back and read the original articles. In there I discussed using System Three
coating epoxy. It's a whole other kettle of stuff. Much thinner and slower than
their normal resin. Thinner and slower than WEST System as well. Another
alternative is MAS epoxy resin with their very slow hardener. The stuff is a
little on the thick side but cures so slowly it penetrates quite well.

ddf

| -----Original Message-----
| From: pianotech-bounces at ptg.org
| [mailto:pianotech-bounces at ptg.org] On Behalf Of Clark Sprague
| Sent: March 07, 2009 3:04 PM
| To: Pianotech List
| Subject: [pianotech] Epoxy
|
| Hey, all!  I just got back from epoxy-shimming a soundboard. 
| The local Woodcrafter store only had System 3 epoxy (not the
| West system I usually use).  I found out that the System 3
| mixes up thicker right out of the gate, and I found myself
| wishing that I had a heat gun with me to get the stuff to go
| deeper, faster.  It worked, however, as I could see some
| spots slowly sinking in.  Two passes today, and it will take
| very little filling-in when it cures, it looks like.
|     I also found that the stuff will thicken with West System
| filleting blend, as there were some cracks way under the tail
| that I could not get to with blue tape to dam off.  Thicken
| to peanut butter consistency, and stuff in the cracks, wipe
| off excess immediately with a wet rag.  I think it will turn out well.
|     Oh, by the way,  I realize that a new board and block
| were in order, but the job was contracted to me by another
| tooner, and he couldn't get the money out of them to do it right.
|     Anyone out there have any other experiences with System 3
| epoxy?  It mixes up with a stiff molasses consistency, rather
| than honey, like the West System.  It went through my glue
| injectors, albeit rather slowly.
|
| Clark Sprague, RPT
|
|
| 

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