Fixing sanding marks

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Radmcg
Posts: 10
Joined: Sat Jan 20, 2024 4:16 pm

Fixing sanding marks

Post by Radmcg »

Ok some of you may have seen my delamination post. For the most part got all of that fixed. Used white sanding sealer 3 coats and looked great to me knocked it down with 400 grit and put 3 coats metallic gold over it (I know thats asking for trouble I just had a can of stewmac stuff at the house). Looked great till I got it in angled light and all kinds of sanding marks. Don't know how I missed these but anyway. What is the best way to correct this. Sand in back to the sanding sealer and apply more sanding sealer or just sand the metallic and apply more color?
AHA
TEETERFAN
Posts: 354
Joined: Fri Sep 07, 2018 12:43 pm
Location: Kansas City, MO

Re: Fixing sanding marks

Post by TEETERFAN »

If all you finish's are lacquer based, I would let the whole thing dry a couple of weeks. Then wet sand (carefully, with minimal water) with 1500 grit, until it is perfectly smooth. Any scratches left by the 1500 will be invisible when top coated. I like to use a small block (like a casino or Monopoly die) to help level, but still be able to negotiate the curves of the LP top. Then come back with the gold, but use multiple thin coats. Thick coats could soften the previous layers excessively and bring back imperfections.
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Kevin Doty
Kansas City
phavriluk
Posts: 573
Joined: Mon Jul 09, 2012 9:49 pm

Re: Fixing sanding marks

Post by phavriluk »

Sanding - - - need to do that. But BLOCK SAND, no freehand attack with a folded piece of sandpaper. Use a block. For 50 years I've been using a sanding block I got with a furniture kit, a particle board block with a piece of felt covering the sanding surface. Easy to make, and just enough compliance, for me, anyway.
peter havriluk
Diane Kauffmds
Posts: 3267
Joined: Sun Mar 09, 2014 8:13 pm

Re: Fixing sanding marks

Post by Diane Kauffmds »

I will second Peter's post. Never sand by hand; always use a sanding block. If you sand by hand, I promise you'll find shallow sanding "dents", after you apply finish. They are impossible to see before finish is applied, and impossible to remove unless you use a sanding block to level the entire surface to the lowest depth.
Diane Kauffmann
Country Roads Guitars
countryroadsguitars@gmail.com
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