Results 1 to 6 of 6

Thread: scratch repair question

  1. #1
    Join Date
    Dec 2008
    Location
    falcon heights, minnesota
    Posts
    5,609

    scratch repair question

    a friend of ours lucked into a perfectly good epiphone 350-12. the finish, front, sides, and neck is still in a very smooth condition, but the back has some small light scratches and such in it from being tossed in the dumpster. last night he asked me what kind of finish it was (i'm guessing poly), and what would be the best way to fix the scratches. i told him that i would bring it up here, and see what happens. thanks guys!
    benedictione omnes bene

    www.burroviejowoodworking.com

    check out my etsy store, buroviejowoodworking

  2. #2
    Join Date
    Nov 2006
    Location
    Austin, Texas
    Posts
    1,448
    My last guess would be poly - pretty brittle and not easily rubbed out and polished. Most string instruments are finished with lacquer or varnish. If it is lacquer, you may be in luck - since lacquer is solvent based, you may be able to soften the existing finish enough to fill the scratches with just some lacquer thinner. I know luthiers have tricks for repairing varnish finishes, but I don't know them.

    To determine if it is lacquer, put some thinner on a Q-tip and work in the most hidden corner. If it is varnish, the lacquer thinner will have no effect, if is lacquer it will soften.
    Charlie Plesums, Austin Texas
    (Retired early to become a custom furnituremaker)
    Lots of my free advice at www.solowoodworker.com

  3. #3
    Join Date
    Dec 2008
    Location
    falcon heights, minnesota
    Posts
    5,609
    Just got off the phone with the Gibson people, and it turns out to be a poly finish. Now comes another question, what would be a recommend wipe on poly?
    benedictione omnes bene

    www.burroviejowoodworking.com

    check out my etsy store, buroviejowoodworking

  4. #4
    Join Date
    Dec 2006
    Location
    RETIRED(!) in Austintown, Ohio
    Posts
    5,319
    Quote Originally Posted by Dan Noren View Post
    Just got off the phone with the Gibson people, and it turns out to be a poly finish. Now comes another question, what would be a recommend wipe on poly?
    Arm-R-Seal
    Jim D.
    Adapt, Improvise, Overcome!

  5. #5
    Join Date
    Mar 2010
    Location
    Denver
    Posts
    1
    Almost certainly poly. How bad are the scratches? If they're not through,you can likely buff them out with automotive polishing compound. If they're deeper, you can fill them with CA glue, scrape or sand flat and buff. Won't be completely invisible, but not bad.

  6. #6
    Join Date
    Nov 2009
    Location
    Orange Park Florida
    Posts
    37
    If the scratches are deep enough to catch your fingernail as you go across them, and you know it's a poly finish, you can get a tiny artists pointed brush an paint poly into the scratches in several coats until you've built them up slightly higher than the rest of the finish. then carefully wet sand the high areas back flush with the rest of the finish using a flad block or pad, then buff it out. The scratches should disappear.

Similar Threads

  1. chair repair question
    By larry merlau in forum General Woodworking Q&A
    Replies: 13
    Last Post: 10-24-2012, 06:41 PM
  2. Table saw repair question?
    By Dan Mosley in forum General Woodturning Q&A
    Replies: 2
    Last Post: 09-20-2008, 06:06 PM
  3. Table saw repair question?
    By Dan Mosley in forum New Tools
    Replies: 2
    Last Post: 09-20-2008, 06:06 PM
  4. First Scratch Stock!!
    By Stuart Ablett in forum Neander Tool Questions and Show & Tell
    Replies: 0
    Last Post: 03-03-2007, 06:48 AM
  5. Scratch & Dent
    By Rennie Heuer in forum Hot Deals
    Replies: 0
    Last Post: 02-08-2007, 12:28 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •