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Old 04-04-14, 10:19 AM
  #13  
Doug Fattic 
framebuilder
 
Join Date: Dec 2009
Location: Niles, Michigan
Posts: 314
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I was having this discussion about clear coating over a bare frame last week when Herbie Helm was preparing a fillet brazed frame he made to exhibit at the Detroit bicycle show. A clear only still changes the way a bare frame looks. It becomes darker and more like a blah gray instead of shinny silver. You guys can try it yourself by wetting a section of bare tubing with water. It still allows the beauty of fillet itself to be seen but the darker appearance definitely makes it more boring looking.

A clear coat without a primer doesn't stick very well to bare metal. It doesn't take too long before water gets through and starts to create visible rust worms under the paint.



By the way I’ve been forever thankful for an important brazing tip Dave gave me some years ago. I noticed he had no porosity whatsoever in his fillets while I always had a few. He said I had to really clean the brass rods just before using. I hadn’t realized the importance of this. That wasn’t something they taught me when I was apprenticing in England when Dave was in grade school. Now I sand or Scotch-Brite and then use a liquid cleaner on the rods as preparation before brazing. Now I get porosity free fillets too. Thanks again Dave!
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