Gel coat removal - water sanding vs. straight line sanding

On Feb 11, 6:56*am, JJ Sinclair wrote:
On Feb 10, 9:55*pm, Brad wrote:





On Feb 9, 7:42*pm, shkdriver
wrote:

Hello,
Having refinished only a shk which is primarily wood construction with
fiberglass cockpit and leading edges, IMHO if you decide to purchase a
pneumatic (air) driven sander, dual action orbital or "air file" there
is a world of difference between quality tools and Harbor freight cheap
imports.
I recomend *Hutchins brand tools, powerful, smooth action, and easy on
air demand. also you can use a water flood with air tools.

For heavens sake wear a high quality air mask, that previous comment of
not needing one because the particles are too big is B.S. and
dangerous!
As an ICU RN I work with pulmonologists every day and ran that one by
them, one simply stated "I wouldn't breath that with your lungs"

As far as time required, I removed three complete top coats of paint
(about 75 lbs worth) and primers and fillers. brought up the new
coatings and used polyurethane top coat, 18 meter wings, 4 foot wing
root, big constant taper fuse, about 1100 hours.
B.T.W. prestec products ROCK!
Good luck and best
wishes!
Scott W.

--
shkdriver

Scott..............Prestec isn't a PU product is it?

I'll be looking at a total paint job of the HP-24 sometime soon. Right
now it is all bare carbon. Can't decide if I want to go with Simtec
products or use a 2-pack PU. a-la PPG concept.

Brad- Hide quoted text -

- Show quoted text -

I recommend PPG Concept (90288 super white) with PCL polyprimer (907
white) for primer. You must be very careful when spraying acrylic
urathane, this stuff can kill you! Get a respirator with hose outside
the spray booth, use plastic gloves, hat and glasses leaving no
exposed skin. You will need about 3 gallons of mixed product which
means 2 gal of paint, 1 gal of catalist and half gal of thinner ($1000
bucks or so). Spray on 4 medium coats or until you get good orange
peal everywhere which is an indication you have enough paint on. Let
it cure out for 24 hours at 70 degrees, then block sand (wet) with 600
followed by 800. *I spray on guide coat (spray can) before hitting it
with 600 then use the black powder rubbed on in the area before
hitting it with 800. Then let it cure out for a good 3 more days
before buffing with a wool pad and liquid rubbing compound.
Hope this helps,
JJ

Hey JJ,

This sounds like what I'll end up doing. I'll probably spray the
Polyprimer myself (this is a polyester right?). Then..........I'll
sand the primer, fill pin holes, repeat as needed, then take it to a
pro to have the top coat/PPG sprayed on.

My backyard tarp shed probably won't work!

Brad