rebedding. old issue, particular Q:grinding/lexan - SailNet Community

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  #1  
Old 02-06-2010
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rebedding. old issue, particular Q:grinding/lexan

port bedding. im doing it now. nothing is as easy as you think.... lol

ive got a glazier pal..... limo glass for the vee berth/head/hanging closet... small enough not to need to be tempered... for the long cabin ports he gave me some lexan polycarbonate.... so far so good, but the glass is like a teeny off (1/16th). you know the best way to grind it with limited tools? 60 course doesnt get it... scared to use metal. that lexan is wild material.... jig it too fast it gets hot enough to fuse to itself behind your cut... like a cold weld.... pretty interesting stuff... indestructable? (barring a 30 foot broadside wall of water.... )

oh btw.... using clear silicone to bed, black to finish..... any thoughts?

thanks Quinn
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Old 02-06-2010
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I wouldn't use untempered glass on a boat. The stuff will be a serious hazard if it should break. Also, acrylic is much better for ports. Acrylic has better UV resistance and doesn't tend to foreshorten under impact. If the port is polycarbonate and it gets hit hard enough, it may flex and foreshorten enough to break the seal...leaving you with a leaky port.
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Old 02-06-2010
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Table saw

If you're trying to cut 1/16 off of an adge you can run it through a table saw.

As for bedding it I would consider using butyl.

Paul
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Old 02-06-2010
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belt sander
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Old 02-06-2010
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BTW, an oscillating saw, like a Fein Multimaster, would be a very good way to cut the polycarbonate...but again, wouldn't recommend using polycarbonate.
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Old 02-06-2010
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Quinn
Are you trying to grind the glass or the lexan?
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Old 02-06-2010
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dancin a jig

jig saw on the lexan.... btw, if you ever fiddle with the stuff its good to lay some tape 'cause the stuff is scratchable....especially with the guide of your jig.

grinding down the glass.... i mean im sooooo stinkin close.... lol.....
oh, another tip... if you are rebedding old frames, and the plexi looks to have a bend, keep some toothpicks around to jam into the rabbit left by the old vinyl to leverage the new piece in while curing....

Quinn
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Old 02-06-2010
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sanding belt, either a bench mount or belt sander that was mentioned by tb


rotozip or another spiral cutter
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Last edited by poopdeckpappy; 02-06-2010 at 10:33 PM.
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