[NSRCA-discussion] gel coat ??

[Verne Koester]

Steve,
Depends on what was used. CA Models planes won't hold up to the thinner. Even methanol softens the gelcoat. PLF Concept fuses will hold up to just about anything you throw at them, including acetone. Chris is on the right track. Some manufacturers use lacquer-based primers as their gel coat, others use epoxy-based primers as their gelcoat. Epoxy will hold up, lacquer won't. As Chris said, true gelcoats are rare these days, mostly because they're too heavy. 

Verne
  ----- Original Message ----- 
  From: Steven Maxwell 
  To: NSRCA Mailing List 
  Sent: Sunday, March 25, 2007 10:30 AM
  Subject: Re: [NSRCA-discussion] gel coat ??


   Thanks Chris that was my thinking, I was going to originally sand it all but that's very time consuming and lacquer gums up sandpaper very bad. My main concern was I didn't want to hurt the fiberglass, carbon, and epoxy on the fuse. If the "gelcoat" is an enamel or polyu, the lacquer thinner won't do much to it. More testing and then I'll run with it. By the way cotton balls work great for this they suck up alot of paint and are cheap.

  Steven Maxwell


    ----- Original Message ----- 
    From: Chris Moon 
    To: patternrules at earthlink.net;NSRCA Mailing List
    Sent: 3/25/2007 10:07:14 AM 
    Subject: Re: [NSRCA-discussion] gel coat ??


    Steve:
        Most fuses don't have an actual gel coat but just a coat of primer which the thinner might attack.  A true gel coat is tough like a normal resin coat and should be ok against thinner but I have never seen a model fuse with a true gel coat.  I would lightly wipe off what you can of the lustercoat with the thinner and wet sand the rest.

    Chris

    Steven Maxwell wrote: 

      Will laquer thinner attack gelcoat? The test I have done show it takes very little gelcoat off. Reason for asking is I'm about to strip a plane that is painted with Topflight Lustrekote and repaint with PPG.

      thanks
      Steven Maxwell

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