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Refinishing a student Bernal?   You are logged in as Guest
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Escribano

Posts: 6417
Joined: Jul. 6 2003
From: England, living in Italy

Refinishing a student Bernal? 
My trusty Bernal student model needs a refinish on the soundboard. I had a sticker on there for a while and you can see the shape where the light didn't get to the wood. I would like to restore it.

I think it is a poly finish. Can I rub it down lightly (what with and which grit?) and then finish with tru-oil (which I know how to do and rather like). I don't want to pay for FP.

Would this even out the colour and mask the sticker shape or will I need a tint?

I'll try to get a photo if it helps.

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  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 3 2014 18:25:56
 
Ruphus

Posts: 3782
Joined: Nov. 18 2010
 

RE: Refinishing a student Bernal? (in reply to Escribano) 
I am no luthier, but remember stories about several luthiers first experience with trying to remove poly finish. Scraping, sanding or corrosives would turn out very tiring. Heat gun and spatula was the way.

I suppose that takes knowledge of how to use the heat gun though. I had a German luthier almost ruin a guitar of mine by using a heat gun for removing a golpeador.

Ruphus
  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 4 2014 0:38:38
 
constructordeguitarras

Posts: 1677
Joined: Jan. 29 2012
From: Seattle, Washington, USA

RE: Refinishing a student Bernal? (in reply to Escribano) 
Really, FP would be best because it would not be necessary to remove any of the old finish first, and a very small amount of FPing would probably improve it a lot.

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  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 4 2014 5:54:26
 
keith

Posts: 1108
Joined: Sep. 29 2009
From: Back in Boston

RE: Refinishing a student Bernal? (in reply to Escribano) 
i stripped a gutar neck that had a poly goop finish and can tell you that you will take off wood when removing the poly goop. you have to get to the wood. i tired to cheat a little around the heel and not go to the wood and the polyurethane over the last layer of poly goop will show--has a different color, etc. i went back and re-did the heel. from what i know about tru-oil one has to start with naked wood and build up the layers. in many respects it is like shellac. polyurethane over tru-oil is do-able but i am not sure if the reverse will work.

that said, i wonder if covering everything but the area that had a sticker and putting the guitar under a uv light each day when the guitar is not in use would work. i have heard people using uv light to get an aged look. violin folks are known to "cheat" a little using uv lights.
  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 4 2014 6:15:50
 
krichards

Posts: 597
Joined: Jan. 14 2007
From: York, England

RE: Refinishing a student Bernal? (in reply to Escribano) 
quote:

I had a sticker on there for a while and you can see the shape where the light didn't get to the wood. I would like to restore it.


Are you in a hurry?
Maybe you could just wait? In time the newly exposed part will 'catch up' with the darker wood. And as Keith has said, a bit of extra UV on the lighter part will speed up the process.

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  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 4 2014 8:05:44
 
Escribano

Posts: 6417
Joined: Jul. 6 2003
From: England, living in Italy

RE: Refinishing a student Bernal? (in reply to Escribano) 
Thanks for all your advice. I might just leave it out of its case for a while.

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  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 4 2014 18:07:08
 
estebanana

Posts: 9373
Joined: Oct. 16 2009
 

RE: Refinishing a student Bernal? (in reply to Escribano) 
If a finish is not having any mechanical, chemical of structural failure, as in cracking, peeling, powering off, etc. A good idea is to just leave it alone.

Is there any exposed wood are any places where the existing finish has been compromised to be really thin? Almost bare? If the finish is full thickness and otherwise healthy then cleaning and a light polish it gives it much more sight appeal.

If not, you can take a high quality automotive polish put a half teaspoon full on a soft cotton cloth and clean the top with that by gently working in small circles. Turn the cloth often when it builds up with dust and grit. Wipe off the residue carefully minding things like the corners of the bridge and edges of tap plate where the polish gathers.

The ghosting from the sticker........I only hope it was not a sticker of Barney the Dinosaur, because you are stuck with his silhouette for another two to four years.
Hopefully it is something manly like a beer advertisement.

I've seen guitars of parents that have the kids stickers on them, fun funny stuff usually. They ask: "How can I take this off? My kid put this on my guitar!" Reply: "What you don't like Minny Mouse and Spice Girls? Try 3M Adhesive remover, sparingly."

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  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 5 2014 0:47:51
 
Ricardo

Posts: 14861
Joined: Dec. 14 2004
From: Washington DC

RE: Refinishing a student Bernal? (in reply to estebanana) 
Or just replace the spot with cool alien head stickers.

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  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 5 2014 3:18:11
 
Escribano

Posts: 6417
Joined: Jul. 6 2003
From: England, living in Italy

RE: Refinishing a student Bernal? (in reply to estebanana) 
It was the Osbourne bull

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  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 5 2014 8:51:05
 
Leñador

Posts: 5237
Joined: Jun. 8 2012
From: Los Angeles

RE: Refinishing a student Bernal? (in reply to Escribano) 
That's probly awesome looking! I'd try to keep it like that!

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  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 5 2014 14:41:56
 
keith

Posts: 1108
Joined: Sep. 29 2009
From: Back in Boston

RE: Refinishing a student Bernal? (in reply to Escribano) 
or put this sticker on to cover the area

http://www.cafepress.com/mf/4384177/paco-de-lucia-for-president_bumper-sticker?productId=11025293
  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 5 2014 14:43:47
 
Escribano

Posts: 6417
Joined: Jul. 6 2003
From: England, living in Italy

RE: Refinishing a student Bernal? (in reply to Leñador) 
quote:

That's probly awesome looking! I'd try to keep it like that!


Looks like I will be doing that

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  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 5 2014 15:24:43
 
Escribano

Posts: 6417
Joined: Jul. 6 2003
From: England, living in Italy

RE: Refinishing a student Bernal? (in reply to keith) 
Nice sticker, wrong shape

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  REPORT THIS POST AS INAPPROPRIATE |  Date Sep. 5 2014 15:25:00
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