NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Celestaire Sextant Case
From: Bill B
Date: 2006 Sep 6, 20:42 -0500
> My case is also an underwater kinetics unit so
> the ABS might work. But I wonder how it would react to the foam post.
Robert
The 5200 and 4200 3M line is Polyurethane and does not like ABS but would
like your boat's fiberglass a ton. A silicone sealant should not have a
problem with ABS and should give you all the structural integrity you need
for a foam post.
If going wood or something like it, then I would consider an ABS pad mounted
to the wood with flat-head countersunk screws, then adhere that pad to the
lid with ABS cement.
You are right, some things just don't mix. FRP resin on Urethane foam, no
problem if I recall. The running joke in my DOD product development lab at
UniRoyal was to hand the new college-kid summer help a Styrofoam coffee cup
and send him over to get a cup full of MEK. I swear, that stuff never
settled in the bottom of the cup as I recall, it passed straight through. I
stood there like a deer in headlights. <g>
Bill
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From: Bill B
Date: 2006 Sep 6, 20:42 -0500
> My case is also an underwater kinetics unit so
> the ABS might work. But I wonder how it would react to the foam post.
Robert
The 5200 and 4200 3M line is Polyurethane and does not like ABS but would
like your boat's fiberglass a ton. A silicone sealant should not have a
problem with ABS and should give you all the structural integrity you need
for a foam post.
If going wood or something like it, then I would consider an ABS pad mounted
to the wood with flat-head countersunk screws, then adhere that pad to the
lid with ABS cement.
You are right, some things just don't mix. FRP resin on Urethane foam, no
problem if I recall. The running joke in my DOD product development lab at
UniRoyal was to hand the new college-kid summer help a Styrofoam coffee cup
and send him over to get a cup full of MEK. I swear, that stuff never
settled in the bottom of the cup as I recall, it passed straight through. I
stood there like a deer in headlights. <g>
Bill
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---
