At 05:11 14 November 2015, wrote:
5 kg. sounds like a decent ballpark estimate. My club has an '85
DG-300
whi=
ch was repainted with polyurethane last year. The original gel
coat had
bee=
n cut polished twice and by last year was in pretty rough shape.
The shop
d=
idn't remove all the old gel coat but just lightly sanded it to take
care
o=
f the oxidation and crazing. Going by the before and after
weighings it
gai=
ned 3.1 kg.


LS4 with very poor original gel taken to a professional refinisher (in
Poland). Aircraft gel completely stripped down to structure.
Reprofiled, T35 gel used as a filler/primer and finished in acrylic
paint (offered as option to PU). Aircraft returned looking beautiful
and ~ 1lb lighter.

Jim