Rick,
Whatever tool you choose for straight cuts I would recommend starting by
drilling out corners with an appropriately sized hole saw, that is with radius
you want for corners. You probably already know this, but don't leave square
corners in the cut out as they will Crack and the cracks migrate under stress.
Bill Walker
CnC 36
Pentwater, Mi
-------- Original message --------
From: Rick Brass via CnC-List <cnc-list@cnc-list.com>
Date: 4/8/17 20:58 (GMT-08:00)
To: cnc-list@cnc-list.com
Cc: Rick Brass <rickbr...@earthlink.net>
Subject: Stus-List Advise on cutting fiberglass
As background, I installed an opening port on Imzadi to replace a fixed
aluminum framed portlight, and it didn’t go to my expectations. I had to expand
the existing opening by a small margin, and decided that I could use my handy
dandy Dremel tool to cut the fiberglass laminate. But the cut I got was far
from smooth and straight. So I decided I’d put off installing the other three
ports until I figured out a better way of doing it.
I have three current projects that will require me to cut laminate: additional
opening ports, removing the inner skin on the cockpit locker covers so I can
replace rotted core, and making a propane locker. So my question is: What would
be the best tool for getting smooth straight cuts in fiberglass laminate?
A friend in the boat repair business will loan me his Rotozip, but I’m not
confident that I would get better cuts that I did on the window opening
(operator error, I freely admit).
Dremel (among others) makes a mini circular saw that looks almost ideal for
making shallow, straight cuts. But corners might be a problem.
A vibrating multi-tool (I still think of it as a Fein tool) seems like a real
possibility, plus having a lot of uses on other projects. But I’m not sure how
well it will cut fiberglass.
You guys are the experts. What tool should I buy (or borrow)?
Rick Brass
Imzadi C&C 38 mk 2
la Belle Aurore C&C 25 mk1
Washington, NC
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