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From: Woody and Kathy (no email)
Date: Tue Jun 26 2007 - 16:42:35 EDT
Hal and all:
Being of frugal Yankee stock, use what ever is the least expensive, and will
still do the job. Stainless, bronze, or aluminum plate, sheet fiberglass
will all work well as backing plates. My favorite is old sections of
fiberglass boats...usually free.
You can bed the plate in 5200 with out bonding it to the plate, by either
greasing the plate with Vaseline, or much cleaner use a layer of
polyethylene bag. This will give you a nice bed that will distribute the
load evenly. What little 5200 creeps into the fastening holes can be dealt
with easily if you should ever have to remove the fastenings.
Before doing this step, over bore the fastening holes, fill with thickened
epoxy, then bore for the fastenings if you do not have a solid deck. This
step will keep water out of the deck. You can do this two ways, either over
boring from the top side, which will make filling the holes easier, or over
bore from the bottom, in which case you will need to seal off the bottom
whilst filling the holes from the top. In either case do not bore completely
through the deck. The latter method will give a cleaner look to the deck
since the over bores will not be seen or have to be hidden. You will however
need at least a 1/2" hole to get the epoxy filling into the cavity. Over
boring, and filling with epoxy does more than just working as a water
barrier. It also provides a structural support between the deck components,
backing plate and, the item being bolted down.
Woody
Marben 27
Port Orchard, WA
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