Gel coat questions

[patterndude at comcast.net]

Oh yes.  I was hopeful that you'd found a non catalyzed white when you said single stage, but now I get it. With the hardeners and mix ratios I can not really mix up less than about 1 oz, which is a lot of waste when you are spot priming.  I found a non-fuel proof gray primer, but that's far from ideal. 
--Lance

--
District 6 AVP 
www.aeroslave.com

-------------- Original message -------------- 

> PPG Concept -- the stuff that Tony Stillman sells. I believe that it is 
> called PPG Deltron Concept 2K Urethane (DCC) 
> (http://www.ppg.com/cr-refinish/phase1/frmProductInfo.asp?Cat=9). 
> 
> David 
> -----Original Message----- 
> From: discussion-request at nsrca.org 
> [mailto:discussion-request at nsrca.org]On Behalf Of Lance Van Nostrand 
> Sent: Tuesday, April 12, 2005 7:44 PM 
> To: discussion at nsrca.org 
> Subject: Re: Gel coat questions 
> 
> 
> David, 
> What single stage urethane white are you using? I'm not aware of a product 
> like that. 
> --Lance 
> 
> ----- Original Message ----- 
> From: "David Flynt" 
> To: 
> Sent: Tuesday, April 12, 2005 9:11 AM 
> Subject: RE: Gel coat questions 
> 
> 
> > Anthony, 
> > 
> > A layer of primer or sealer is unnecessary to get automotive polyurethane 
> > to 
> > stick to the gelcote. It must be free of residue and every square inch of 
> > shine removed with a gray scratch pad. Primer is nice for filling small 
> > surface defects, however to save weight, it is desirable to wet sand (with 
> > 800 grit) all of the primer off, leaving just the defects filled with 
> > primer. This is risky because sanding off the primer often exposes 
> > pinholes. On white gel coats, I like to 1) scuff entire fuse, 2) fill 
> > voids 
> > and pinholes with Hobbyco Hobbylite filler, 3) spot spray the seam and 
> > other 
> > surface defects with white single stage urethane, and 4) carefully wet 
> > sand 
> > the white (not the gel coat) with 800. You can use primer in the above 
> > sequence also, but I find that a final spray of white along the seam is 
> > better at revealing pinholes. It also matches the gel coat color which 
> > makes covering with other colors easier. 
> > 
> >>Will it make a decent white once it is cleared? 
> > 
> > It will, depending on how fussy you are. If you have spot sprayed white 
> > on 
> > surface defects, the gel coat and white may not match. I have always shot 
> > a 
> > very light coat white over the gelcoat masking to avoid overspray as with 
> > any other color. It won't add much weight. 
> > 
> > I hope it goes well for you. 
> > 
> > David 
> > 
> > 
> > 
> > -----Original Message----- 
> > From: discussion-request at nsrca.org 
> > [mailto:discussion-request at nsrca.org]On Behalf Of Anthony Romano 
> > Sent: Monday, April 11, 2005 3:13 PM 
> > To: discussion at nsrca.org 
> > Subject: Gel coat questions 
> > 
> > 
> > Getting the new bird ready and need some help. How do I deal with gel 
> > coat? 
> > Does it need primer? Can I just scuff and shoot? Will it make a decent 
> > white 
> > once it is cleared? 
> > 
> > Any help would be appreciated 
> > 
> > Anthony 
> > 
> > 
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