I find that a fine grit of abrasive (eg 120) works reasonably well, due
mostly to having thinner backing paper that reaches better into the weave
pattern. But I expect you've tried this already.
Duncan McF.
----- Original Message -----
From: "Fred R. Klein" <fklein@orcasonline.com>
Subject: Europa-List: Scuff sanding
<fklein@orcasonline.com>
>
> Hi All,
>
> On the subject of "scuff sanding"...particularly in relation to
preparation
> for the 2" wide reinforcement tapes between the wing spar and skins...I've
> read thru the manual as well as the matronics search without finding any
> info which seemed relevant.
>
> My concern is my uncertainty as to what constitutes adequate "scuff
sanding"
> in order to achieve required bonding.
>
> As I sand the areas of the skins where the 2" reinf. tapes go, I note that
> because of the weave of the glass on the skins, a pattern developes with
the
> high areas becoming whitish matte and the low areas remaining darker and
> somewhat glossy; my fear is that if I continue sanding so that the area
> becomes 100% "whitish matte", I will remove too much material and degrade
> the strength value of the existing glass skins.
>
> I'd be grateful to learn whether or not a consensus has been reached on
this
> issue as well as any individual comments from "those who have gone before"
> me.
>
> Fred
> A194
>
>
|