i am currently just about ready to spray clear coats on a guitar body
project...i have used a hi gloss oil based enamel for solid
colour and want to spray polyurethane clear coats over it for
durability.....i tried it on a piece of scrap and found that the solid
coat wrinkled when i put on the polyurethane clear coat....why would
that happen??

the last thing i need right now is for the same thing to happen on the
guitar body after putting so much work into it....
thanks for any input
zz
zz

On Wed, 13 Jul 2005 10:16:04 GMT, the opaque (zz)
clearly wrote:

i am currently just about ready to spray clear coats on a guitar body
project...i have used a hi gloss oil based enamel for solid
colour and want to spray polyurethane clear coats over it for
durability.....i tried it on a piece of scrap and found that the solid
coat wrinkled when i put on the polyurethane clear coat....why would
that happen??

Karma, dude. Ruining a perfectly good finish with polyurinestain?
It's gotta be karma. Oh, and a slightly wet surface underneath, or
possibly a mismatch in solvent bases of the finishes, like lacquer
over enamel or vice versa. Try it again after letting the finish
settle, dry, and cure for a week or two.

Better yet, ask your local paint store for a pair of -compatible-
finishes.


the last thing i need right now is for the same thing to happen on the
guitar body after putting so much work into it....

I hear that. G'luck.


- Ever wonder what the speed of lightning would be if it didn't zigzag? -
http://diversify.com Full Service Web Application Programming

zz wrote:
i am currently just about ready to spray clear coats on a guitar body
project...i have used a hi gloss oil based enamel for solid
colour and want to spray polyurethane clear coats over it for
durability.....i tried it on a piece of scrap and found that the solid
coat wrinkled when i put on the polyurethane clear coat....why would
that happen??

Because spray urethanes often (always?) have solvent(s) in them other
than plain old thinner and those can attack other finishes.

Another possibility: if the color coats were pretty thick and not really
dry they could have acted like "wrinkle paint"...after putting on the
poly and it dried the color paint continued drying and in so doing
shrunk causing the wrinkles. I'm betting on the solvent theory
though...
______________________

the last thing i need right now is for the same thing to happen on the
guitar body after putting so much work into it....

It would. You might try another scrap just misting on a *very* light
coat of urethane and letting it dry as a barrier. Or using another
barrier...maybe brush on poly?

--
dadiOH
____________________________

dadiOH's dandies v3.06...
....a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http://mysite.verizon.net/xico

On Wed, 13 Jul 2005 10:16:04 GMT, (zz) wrote:

i am currently just about ready to spray clear coats on a guitar body
project...i have used a hi gloss oil based enamel for solid
colour and want to spray polyurethane clear coats over it for
durability.....i tried it on a piece of scrap and found that the solid
coat wrinkled when i put on the polyurethane clear coat....why would
that happen??

the last thing i need right now is for the same thing to happen on the
guitar body after putting so much work into it....
thanks for any input
zz
zz
It's the solvents in your poly and and any workaround is going to be
more work and less satisfying than it's worth.

My Suggestion: Call Target Coatings at 800-752-9922 and order a quart
of their 9000 series Super Clear Polyurethane ($19.95 plus ship). If
you're willing to pay the freight they can have Fedex deliver it to
your door next day.

http://www.targetcoatings.com

Being a water-borne product it wont react with your undercoats and
you'll love the final finish. Unlike solvent based lacquers, this
stuff tends to look absolutely horrible as you're applying it, but
just follow your normal spraying practices and let it dry good and
you'll be amazed. If you put it on a little heavy, then let it dry
for 2-3 weeks and polish it out you'll get that showroom shine that
you're probably looking for.

A big plus is that it don't stink

The usual disclaimer applies, I'm just one happy customer. Target has
really pushed the envelope with their formulations, to the point that
they now have a workable product for almost any wood finishing
application.

On Wed, 13 Jul 2005 10:18:12 -0400, LP
wrote:

On Wed, 13 Jul 2005 10:16:04 GMT, (zz) wrote:

i am currently just about ready to spray clear coats on a guitar body
project...i have used a hi gloss oil based enamel for solid
colour and want to spray polyurethane clear coats over it for
durability.....i tried it on a piece of scrap and found that the solid
coat wrinkled when i put on the polyurethane clear coat....why would
that happen??

the last thing i need right now is for the same thing to happen on the
guitar body after putting so much work into it....
thanks for any input
zz
zz
It's the solvents in your poly and and any workaround is going to be
more work and less satisfying than it's worth.

My Suggestion: Call Target Coatings at 800-752-9922 and order a quart
of their 9000 series Super Clear Polyurethane ($19.95 plus ship). If
you're willing to pay the freight they can have Fedex deliver it to
your door next day.

http://www.targetcoatings.com

Being a water-borne product it wont react with your undercoats and
you'll love the final finish. Unlike solvent based lacquers, this
stuff tends to look absolutely horrible as you're applying it, but
just follow your normal spraying practices and let it dry good and
you'll be amazed. If you put it on a little heavy, then let it dry
for 2-3 weeks and polish it out you'll get that showroom shine that
you're probably looking for.

A big plus is that it don't stink

The usual disclaimer applies, I'm just one happy customer. Target has
really pushed the envelope with their formulations, to the point that
they now have a workable product for almost any wood finishing
application.
many thanks..i am thinking of staying with the hi gloss enamel and
forget about clear coating....prolly just shoot a couple more colour
coats rub it back and buff it out ,,,,
zz