Plywood
6mm ply - decks,
interior, wing, frames 17 sheets
6 or 9mm - hullskins. (Depending
on quality) 16 sheets
9mm ply - bulkheads, platform, beams. 16
sheets
12mm ply - keelplanks, rudders, centreboard 3
sheets
TIMBER: (sizes nominal PAR i.e. 2" x 1" = 45 x 20mm
actual size)
1 1/2" x 3/4" . hull and deck stringers
150m
2" x 1" gunwales and
general 300m
2" x 2"
beamboxes 5m
3" x 1"
major strength framing 25m
1" x 1"
interior 50m
4" x 1"
inner stem 6m
2" x 5/8"
shelf l0m
6" x 5/8"
keel (or laminate from narrower strips)
60m
4" x 4" outer stem cedar
( or laminate) 3m
2" x 1"
outer gunwale hardwood 25m
1" x 1/2"
bulkhead framing (or 4" x 1"sawn in curve) 10m
3" x 2"
beams 16m
2" x
1 1/2" mast beams 6m
4" x 5/8"
. centreboard 25m
Note: all plywood to
be marine grade, best quality. If using lesser grade ply, then hull skins
should be 9mm,decks 7mm, minimum. Use lightweight plywood , e.g.
gaboon.
GLUE: Major strength joints and underwater joints to be
epoxy glue (60kg approx)
Deck and Interior joints can be polyurethene
glue (10kg approx)
Hulls to be sheathed in 200g glass
cloth
50m2 sheathing material required ( Deck sheathing optional,
extra 35m2 material required)Details of working conditions, method, fillet
construction etc. are obtainable from glue manufacturers, as different
types require different techniques.
Fastenings to be gripfast nails
and brass screw.
Use 1" x no 8 screws in 9mm ply (500
approx)
3/4" x no 6 screws in 6, 7mm ply
(500 approx )
1/2" x no 6 screws in
buttblocks ( 200 approx)
3/4" nails or stainless staples
(hullskins) approx 5000.
Fastening should be at approx. 100mm spacings,
use nails on hullskins and lightly loaded joints.
Deckfittings should
be fitted with stainless steel self tappers/bolts.
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