Fred,
The serration direction is immaterial as it will eventually be faired in by
a thin, flat, surfacing coat. This resin/filler application technique is
used to visually identify low areas during initial filling and sanding
steps. As I mentioned, it also provide a better keying surface for
succeeding coats. Using a 'long board', rather than a block sander, for
initial fairing helps to prevent the creation of additional low areas
through spot sanding. It spans existing low spots by resting on higher
surfaces around the depression thereby bringing the low spot into fair.
Regards,
Jack
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Fred Klein
Sent: Monday, November 20, 2006 3:19 PM
Subject: Re: Europa-List: To Those That Have Sanded Before Me... :)
Jack,
As I visualize this technique, I take it that the strokes of the
serrated screed are chordwise (rather than spanwise) in order to
facilitate the maintaining of the airfoil.
Please confirm.
Fred
A194
> Jack Hilditch wrote:
>
>> Composite racing sailboat builders use a technique that produces a
>> fair surface, without bumps or valleys, while minimizing weight or
>> extra filler. They screed the filler/resin mix onto the surface using
>> a small-toothed, serrated plastic trowel (the same kind used to apply
>> ceramic tile cement to walls).
--
9:20 PM
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