Sweat damaged poly finish?

Discussion in 'Hardware, Setup & Repair [BG]' started by Stone Soup, Jan 7, 2014.

  1. Stone Soup

    Stone Soup

    Dec 3, 2012
    Here's something I'd never seen before.

    In the past, I noticed the back of my Stingray 5's body having a slightly cloudy look to it. I sweat a lot, sometimes. I figured it was sweat soaking into the finish a bit and it would dry out. I started noticing cracks in the finish, where the cloudy (sweaty) area was. At first, I thought I had put a couple scratches in the finish. Maybe, buttons had scratched it. Well, they have gotten worse, and I haven't been gigging it much, lately. Now, I have cracks that have split all the way through the finish and are curled up on the edges. Pretty strange. I thought poly finishes were immune to stuff like this.

    Have any of you ever seen this sort of thing before?

    You can see the finish lifting, around the cracks.

    Trying to use the light to show the curling edges of the cracks. Those are not indentations.

    The bass is 10 years old.
  2. Pearly Gator

    Pearly Gator

    Dec 10, 2005
    Looks like "buckle rash" or scratches from something else you were wearing.

    /2 cents
  3. Fat Steve

    Fat Steve The poodle bites, the poodle chews it.

    Some great relicing you've got going on there! :bag:
  4. Stone Soup

    Stone Soup

    Dec 3, 2012
    Yeah, I get that, but why does the finish around the scratches curl up and away from the body? Never seen it before.
  5. funkingroovin

    funkingroovin Conquering A-D-D,and all the other notes as well!

    Apr 19, 2009
    I have a bassist buddy that sweats like a sprinkler,no joke. This guys brings EIGHT shirts to every gig...I've seen him ruin many shirts,but the poly finish on his one and only bass has held up fine for the last 15-16 years..
  6. dedpool1052


    Jan 10, 2011
    Seattle, WA
    i once had a '98 stingray5 (bought used in '03) with marks like that on it. no clue what caused them. in the 8 years i owned that bass, those marks never progressed passed being superficial. i wouldn't sweat it.
  7. Hopkins

    Hopkins Supporting Member Commercial User

    Nov 17, 2010
    Houston Tx
    Owner/Builder @Hopkins Guitars
    Im sure sweat didn't cause it. I would guess its an adhesion problem that showed itself after a few surface scratches were put in the finish
  8. Lownote38


    Aug 8, 2013
    Nashville, TN
    That looks more like a paint problem than a sweat problem.
  9. Stone Soup

    Stone Soup

    Dec 3, 2012
    I guess I'll 'naturally relic' the finish right off this thing. I have always taken great care of my basses. I've seen budget instruments older than this that have no finish issues. It bugs me.
  10. My guess is that it's both: the scratches allowed the sweat to get under the finish and the wood swells there pushing up the finish.

    Either scratches or sweat alone probably wouldn't have done all that, but it's quite easy to imagine with the two combined.
  11. Stone Soup

    Stone Soup

    Dec 3, 2012
    You're probably right. The finish is extremely thin. They're probably button scratches that were deep enough to let moisture through.
  12. fhm555

    fhm555 So FOS my eyes are brown Supporting Member

    Feb 16, 2011
    Not all poly finishes are created equal. I've seen poured poly table tops cloud up and crack from moisture coming out of the wood. If you catch it soon enough, a few passes with a propane torch usually clears it right up.

    I've also seen poly finishes on furniture crack for no apparent reason. The only thing I can think of is improper mixing when the finish was originally mixed.
  13. etoncrow

    etoncrow (aka Greg Harman, the curmudgeon with a conundrum)

    I once saw alien piss do that to a finish....just saying
  14. Stone Soup

    Stone Soup

    Dec 3, 2012
    Good info, here. :)

    I haven't pissed aliens, in ages. Thanks for playing.