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Portholes  Spigots  Flanges  Camberedsurface  Plywoodtemplate  Plasticportholes  Leak  

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Toms Tips on Portholes

By Tom Neale - Published July 23, 2009 - Viewed 738 times

  1. Many portholes have spigots (flanges) that extend out from the side of the cabin, over the deck. These can catch feet and shins and can easily be broken as you move stuff about the deck.
     
  2. If the porthole is plastic you can trim the spigot back by making a plywood template that fits around the spigot and that is as thick as you want it to extend out.  With this in place, you can use an appropriate tool (with which you can safely and accurately work) to cut the spigot evenly.
     
  3. I prefer to leave this spigot extending, despite the obvious negatives of doing so. This is because it helps to strengthen and maintain the rigidity and shape of the porthole and it helps to keep out light rain when the portholes are open.
     
  4. Maintaining rigidity and shape of plastic portholes is critical. Often they are attached to a slightly cambered surface. If they are distorted as you install them (as by tightening the screws and bolts too much) they will be hard to close and more likely to leak.
     

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Copyright 2004-2010 Tom Neale

 




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