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  #1  
Old 12-14-2007, 09:23 AM
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sanding down an epoxy board- bad idea?

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Several days (and coats) later, I'm happy to say my board has a nice epoxy shine to it. It feels super smooth but I'd like to do some light sanding (probably 600 grit) with a radius block to make sure it's truly leveled without any rough spots

- should I use something like mineral spirits or lemon oil to remove the dust from the board and return that healthy glow?

I'm afraid mineral spirits might weaken the top layer, but then again, this stuff is 'strong like bull'. And would lemon oil have a positive effect on the board? I assume epoxy fills up my rosewood board's pores and that lemon oil wouldn't even be able to penetrate the armor.
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Old 12-14-2007, 09:33 AM
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It is standard procedure in most pro shops to do a final leveling of the surface before buffing. It is the only way to be absolutely sure that the surface is true.

If the epoxy has cured there should not be a problem using naphtha or mineral spirits to float the particles away. If it concerns you, water is fine also. The standard caveat is to keep the water from unfinished surfaces.

You are correct. The lemon oil will not penetrate the epoxy.
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Old 12-14-2007, 09:38 AM
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600 grit will remove the bumps but it will certainly dull and scratch the finish and oil ain't going to help. You will need to polish it again to get the shine back.

After sanding ending with 2,000 grit, you'll need a polish like Meguiar's Mirror Glaze.

Good Luck
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Old 12-14-2007, 10:56 AM
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awesome thanks for the tips!

Random question: How many coats is standard on an epoxied bass board?
  #5  
Old 12-15-2007, 11:24 AM
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Quote:
Random question: How many coats is standard on an epoxied bass board?
it all depends on how thick you applied them, and what your thickness target is. I apply three rather thin coats in my process - the first coat fills all the pores, the second coat builds thickness and is roughly leveled after it cures, and the third coat is for final leveling and polishing


because you have potential to harm the neck shaft finish, I would recommend using only lightly soapy water when wet sanding and never using naphtha, mineral spirits, or any other kind of petroleum product. using soapy water also eliminates the need for a respirator cartridge that will properly protect you from the fumes gassed off as the other products evaporate - using only soapy water means you can use a simple (and inexpensive!) dust filter in your respirator

all the best,

R
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  #6  
Old 12-16-2007, 08:41 AM
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Originally Posted by cloren View Post
How many coats is standard on an epoxied bass board?
I did 12 coats on mine (IIRC). Very thin ones too... I polished mine (to a "glossy sheen") with 1600 grid wet-sanding paper, a piece of brown grocery-bag paper and a final buff with some wool...
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