Urethane Paint

If urethane is requested, the manufacturer will most likely not use gelcoat in the mold and apply the urethane finish after assembling the parts. I know my Genesis was done this way. Ready to spray urethane is about 10# per gallon and it would take about 2 gallons.
JJ

On Thursday, November 12, 2015 at 10:03:38 AM UTC-5, wrote:
If urethane is requested, the manufacturer will most likely not use gelcoat in the mold and apply the urethane finish after assembling the parts. I know my Genesis was done this way. Ready to spray urethane is about 10# per gallon and it would take about 2 gallons.
JJ

Not true of current production yet John. Ships are molded with gelcoat, then filled and sanded, followed by finish paint. This avoids the million pinhole problem,
Maybe at some point they will spray primer in the mold, followed by lamination. That would require knowing and tracking which parts go on a painted ship, plus some process and quality controls.
FWIW
UH

On Thursday, November 12, 2015 at 11:01:22 AM UTC-5, wrote:
On Thursday, November 12, 2015 at 10:03:38 AM UTC-5, wrote:
If urethane is requested, the manufacturer will most likely not use gelcoat in the mold and apply the urethane finish after assembling the parts. I know my Genesis was done this way. Ready to spray urethane is about 10# per gallon and it would take about 2 gallons.
JJ

Not true of current production yet John. Ships are molded with gelcoat, then filled and sanded, followed by finish paint. This avoids the million pinhole problem,
Maybe at some point they will spray primer in the mold, followed by lamination. That would require knowing and tracking which parts go on a painted ship, plus some process and quality controls.
FWIW
UH

The gel coat sprayed in the mold is very thin. I had opportunity to look at my new glider in production, before it was moved to the paint shop.

I was just looking at this the other day for a project we're working on. Out of the 10 lbs or so per gallon, not all of that is solids; the solvents and some other additives will evaporate not to mention some lost to overspray. The percentage varies. It seems like 60% is a decent average, so 6lbs/gallon with about 2-3 gallons for a 15 meter glider? Call it 12-15 lbs?

P3