• TalkBass has been independent since 1998. Add your voice.
    Create a free account to reply to discussions, view embedded media, and browse with fewer display ads.
    Join freeLog in
    Want zero display ads or expanded classifieds tools? Compare plans.

Waterslide decal installation question

Hi, all. I'm in the process of assembling a custom Geddy Lee-style jazz, and I ordered some 70s Waterslides from to install on the headstock. I have installed these on a couple of necks previously with no issue, and they've always turned out great.

I applied one a couple of weeks ago, and it turned out....'cloudy'. As if the decal paper wasn't adhering to the headstock, or had air under it. I followed the instructions to the letter, as I had done in the past, but it just didn't look good. Since I thought that it could have been a bad install on my part, I removed it, and started over.

For reference, here's what I did:
1. Removed old waterslide.
2. Sanded (up to 400 grit) until smooth.
3. A few coats of Watco clear lacquer (same as I have always used).
4. Wet sand until smooth, let dry.
5. The next week, apply decal. Cut out decal, soak in warm water until decals just start to slide, then position.
6. Smooth down with wet paper towel, and let dry.
7. After adequate drying time, start lacquering - light mist coats, let dry, then heaver coats over a few days, and so on.

After a number of mist coats, and before I start applying heavier coats, I get the same thing: the decal looks as though there is air under it. See pic below.

Any suggestions on what I may be doing wrong? Do I need to fully lacquer the headstock before applying the decal?

I have already contacted the seller, in the event that it was just a 'bad batch', but any help would be appreciated.

waterslide_bad.jpg
 
Last edited:
It's better to put the decal over the finish non sanded. You're seeing the flattened (gloss sanded off) and the gloss around it causing a mismatch finish under the decal. It won't gloss back up until finish is sprayed over it which will never happen since its covered with the decal. Put the decal over the gloss, cover it in more clear and it'll disappear
 
It's better to put the decal over the finish non sanded. You're seeing the flattened (gloss sanded off) and the gloss around it causing a mismatch finish under the decal. It won't gloss back up until finish is sprayed over it which will never happen since its covered with the decal. Put the decal over the gloss, cover it in more clear and it'll disappear

Sorry, confused. Do you mean i should finish the headstock, sand and gloss it up - THEN apply the decal, sand,etc.?
 
When you apply finish over finish that has been sanded the finish chemically bonds to the previous coat but where your decal is that can't happen so it still has a satin look under it from where you sanded it. The decal is acting like a top coat of clear (but one that can't chemically adhere) so you still see the satin appearance from the sanding process.
 
  • Like
Reactions: tracer03
When you apply finish over finish that has been sanded the finish chemically bonds to the previous coat but where your decal is that can't happen so it still has a satin look under it from where you sanded it. The decal is acting like a top coat of clear (but one that can't chemically adhere) so you still see the satin appearance from the sanding process.

Gotcha - thanks for that. I'll sand it off and refin, then try again.
 
If it has worked in the past (applying the decal on a wet sanded surface), possibly the previous decals had a heavier or more fluid layer of adhesive on them. This could have filled the "satin" surface, rendering it transparent.

The solution as mentioned, is to apply decal on a polished gloss surface.

-
 
When you apply finish over finish that has been sanded the finish chemically bonds to the previous coat but where your decal is that can't happen so it still has a satin look under it from where you sanded it. The decal is acting like a top coat of clear (but one that can't chemically adhere) so you still see the satin appearance from the sanding process.

I just realized - I had sprayed clear gloss on the headstock, and wet sanded to about 800 (IIRC). While it wasn't glass, it was pretty smooth and glossy.
 
There is this from the "how to" section Decal Application Pic/Tutorial | TalkBass.com

I had something similar with putting a decal on a coat of satin poly, if I put it on gloss poly everything was fine. Maybe you sanded off all the lacquer or poly is the only thing I can think of, I never sanded I believe, the tutorial says to sand which surprised me. A picture of mine similar to yours on page 4 or so...
 
There is this from the "how to" section Decal Application Pic/Tutorial | TalkBass.com

I had something similar with putting a decal on a coat of satin poly, if I put it on gloss poly everything was fine. Maybe you sanded off all the lacquer or poly is the only thing I can think of, I never sanded I believe, the tutorial says to sand which surprised me. A picture of mine similar to yours on page 4 or so...
I didn't know about this tutorial and I applied my waterslide decals over a sanded headstock. However, I reattached some spots where it lost adhesion with a solution of Elmers carpenter glue. It seems to be holding alright. Nice and flat. no bubbles, no curling edges. Does anyone know if I spray a couple kight coats of sanding sealer over it, if it will be ok and subsequently for the rest of the headstock lacquering? I'd hate to have it delam later on. A guy at StewMac told me to do it this way. Now I'm worried.