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 Post subject: Second coat of epoxy
PostPosted: Mon Nov 08, 2010 10:27 am 
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Brazilian Rosewood
Brazilian Rosewood
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Joined: Wed Feb 20, 2008 9:12 pm
Posts: 6994
First name: Mike
Last Name: O'Melia
City: Huntsville
State: Alabama
Focus: Build
Status: Semi-pro
I think I remember Todd Stock doing a test where he applied several coats of epoxy, showing that the grain popped more at each application.

Question is, do you sand between coats and if so, how far? Just nub removal? Or back to wood?

One of my concerns is witness lines (and or splotch).

Mike


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 Post subject: Re: Second coat of epoxy
PostPosted: Mon Nov 08, 2010 12:44 pm 
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Cocobolo
Cocobolo

Joined: Mon Sep 25, 2006 12:46 pm
Posts: 413
Location: Toronto, Canada
First name: Michael
Last Name: Lloyd
City: Toronto
Country: Canada
Focus: Build
Status: Amateur
Hi Mike,

I would say you should be sanding back to the wood after each application. I don't use epoxy and instead use pumice. I still sand to the wood where needed.

Check "Fixture, Video and Picture Tutorials" for more on pore filling.

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“I was born to ignorance, yes, and lesser poverties ...
I was born to privilege that I did not see ... I didn’t know it, but my way was paved” – John Gorka


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 Post subject: Re: Second coat of epoxy
PostPosted: Mon Nov 08, 2010 1:23 pm 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Feb 20, 2008 7:15 pm
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First name: Ed
Last Name: Bond
City: Nanaimo
Country: Canada
Focus: Build
Status: Professional
I just scuff and try really hard not to go through to the wood. Splotchiness can definitely be an issue. Some people thin their final coat 50/50 with alcohol and wipe it on. This can help even out splotchiness.


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 Post subject: Re: Second coat of epoxy
PostPosted: Mon Nov 08, 2010 2:03 pm 
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Cocobolo
Cocobolo

Joined: Tue Nov 27, 2007 2:36 am
Posts: 241
Location: Magnolia, Texas
First name: Chuck
Last Name: Gilbert
Focus: Build
Status: Semi-pro
I sand back to the wood but I do it VERY carefully so as not to open up more pores. I apply two coats and do not use a final coat of thinned epoxy. I have no blotching issues nor do I have problems with having to drop fill a bunch of new pores. You just have to have a light touch when you break through the epoxy onto the wood surface (I'm using P320). My goal is to fill the pores and ONLY the pores.

Good luck!

Chuck

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 Post subject: Re: Second coat of epoxy
PostPosted: Mon Nov 08, 2010 2:11 pm 
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Mahogany
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Joined: Mon Feb 11, 2008 10:15 pm
Posts: 94
Location: Washington State
First name: Mark
Last Name: Schrier
State: Washington
Focus: Build
Status: Amateur
A plug for Todd's video. Enter 'MDLuthier' in a search on Youtube.

Mark

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