Gelcoat repair

Anybody ever use PolyLux?

It's what George Applebay uses on all of his aircraft. It can be
sprayed through a regular spray gun. SimTec has to be shot through a
much more expensive spray gun. Also, PolyLux is much cheaper.

On Nov 19, 12:46*pm, Scott Alexander
wrote:
Anybody ever use PolyLux?

It's what George Applebay uses on all of his aircraft. *It can be
sprayed through a regular spray gun. *SimTec has to be shot through a
much more expensive spray gun. *Also, PolyLux is much cheaper.

I've sprayed Prestec successfully using a Laquer gun, and also a HVLP
conversion gun. 1.8mm tip and thinned per specs with Acetone.

That being said, only rarely do I get a non-orange peel finish, but
the stuff cuts easily if you get to it within a day of setting.

Brad

On Nov 19, 12:46*pm, Scott Alexander
wrote:
Anybody ever use PolyLux?

I've used a bunch of their 670 primer and their 300 gloss topcoat. The
primer was pretty good but nothing special. I really liked the 300
series, though; it sprayed on nice with a cheapie Harbor Freight
touchup gun and 1.4mm nozzle. Their gelcoat for molded parts was
pretty good, too.

The issue I had in dealing with PolyLux is that they're a small
company with little web presence. I haven't worked with them lately,
but when I last did there was no catalog of products on the web, and
when I needed information I had to actually phone them up. Also, I'd
sometimes call and find that what I wanted wasn't in stock and
wouldn't be batched for several weeks.

Thanks, Bob K.
www.hpaircraft.com

On Nov 19, 1:46*pm, Bob Kuykendall wrote:
On Nov 19, 12:46*pm, Scott Alexander
wrote:

Anybody ever use PolyLux?

I've used a bunch of their 670 primer and their 300 gloss topcoat. The
primer was pretty good but nothing special. I really liked the 300
series, though; it sprayed on nice with a cheapie Harbor Freight
touchup gun and 1.4mm nozzle. Their gelcoat for molded parts was
pretty good, too.

The issue I had in dealing with PolyLux is that they're a small
company with little web presence. I haven't worked with them lately,
but when I last did there was no catalog of products on the web, and
when I needed information I had to actually phone them up. Also, I'd
sometimes call and find that what I wanted wasn't in stock and
wouldn't be batched for several weeks.

Thanks, Bob K.www.hpaircraft.com

I use a standard gun with Prestec also, but thin with a slow or medium
lacquer thinner. Dupont 3602S is my favorite. The slow thinner lets
the finish to flatten out so there's a lot less orange peel. Another
trick is to just fog on the first coat and allow it to tack so that
the following coats don't run off. I run the paint on the thin side
and use multiple lighter coats that tack slightly between coats to
build up a flat finish, sometimes as many as 5 or 6 coats. If I have
concerns about pot life while spraying I'll store the gun in the
fridge between coats. If you're blending into an existing finish
extend the spray area a little each time so the thickness tapers out
onto the existing gelcoat. At the end of spraying you can fog the
feathered edge with thinner only to get it to flatten out.

Craig

On Nov 19, 6:20*pm, Craig wrote:
On Nov 19, 1:46*pm, Bob Kuykendall wrote:





On Nov 19, 12:46*pm, Scott Alexander
wrote:

Anybody ever use PolyLux?

I've used a bunch of their 670 primer and their 300 gloss topcoat. The
primer was pretty good but nothing special. I really liked the 300
series, though; it sprayed on nice with a cheapie Harbor Freight
touchup gun and 1.4mm nozzle. Their gelcoat for molded parts was
pretty good, too.

The issue I had in dealing with PolyLux is that they're a small
company with little web presence. I haven't worked with them lately,
but when I last did there was no catalog of products on the web, and
when I needed information I had to actually phone them up. Also, I'd
sometimes call and find that what I wanted wasn't in stock and
wouldn't be batched for several weeks.

Thanks, Bob K.www.hpaircraft.com

I use a standard gun with Prestec also, but thin with a slow or medium
lacquer thinner. Dupont 3602S is my favorite. *The slow thinner lets
the finish to flatten out so there's a lot less orange peel. *Another
trick is to just fog on the first coat and allow it to tack so that
the following coats don't run off. *I run the paint on the thin side
and use multiple lighter coats that tack slightly between coats to
build up a flat finish, sometimes as many as 5 or 6 coats. *If I have
concerns about pot life while spraying I'll store the gun in the
fridge between coats. *If you're blending into an existing finish
extend the spray area a little each time so the thickness tapers out
onto the existing gelcoat. *At the end of spraying you can fog the
feathered edge with thinner only to get it to flatten out.

Craig- Hide quoted text -

- Show quoted text -

Std HVLP gun with 1.8 nozzle for Prestec. Note that excess thinning
can increase porisity in finished coats which ain't so good.
UH