16 July, '06
He’s into the heavy stuff; the little Bosch power plane
is really earning its livlihood right now. That big hardwood
deadwood forms a veritable wall down the backbone of the boat.
It does not look like a lot on the plan, and 900mm draft is
only about 3 ft when the norm for small and midrange cruisers
is 4ft 6 to 5 ft but when the boat is only 6.5m and it’s
a full length keel the proportions mean that this is a lot of
lateral plane area for the size of boat.
At 140mm (5 ½ inches) thick there is a lot of volume
in there, so by using a wood which is close to the same weight
as water that volume is not trying to float up, meaning that
the ballast is much more effective. Assuming that the wood is
close to double the weight of the more common durable softwoods
used elsewhere in the boat it probably counteracts about 125
kg of buoyancy low down which is a huge plus in terms of the
slow and noisy job planing the deadwood smooth and getting
the beginnings on the foil shape on the leading edge,
not only noisy but the dust is nasty stuff to breath so
its on with all the protective equipment.
a capping to go on that leading edge yet, and another
big piece of hardwood to go on the after section of the
keel. Lots of shavings, and a lot of freehand work with
the planer to get it all smooth and streamlined.
The keel was built up by stack laminating 70mm thick layers
of wood, screwing cleats on the sides of the stack so each additional
layer could be clamped in place. We used big lumps of architectural
stone to hold the first couple of layers down and worked up
Building that way means that the sides are a bit ragged, stepped
in and out with lumps of glue squeezed out from the joints and
splinters ready to spear the unwary hand. So there is a really
major smoothing off job to be done, hence the power plane. LOTS
That little plane by the way is a Bosch PHO 16-82 550 watt
handyman grade power plane with rebate facility and a single
replaceable tungsten carbide blade. I admit that I bought it
because it was cheap, it had been part of a window display on
the sunny side of a shop, and along with the other tools had
faded in colour. That plus the arrival of a new range from the
manufacturer meant that I got the power plane and a lightweight
jigsaw for half price. They are both light in weight, easy to
use and seem to be surviving the hard use very well. While I
prefer to buy commercial level tools, for a handyman doing the
occasional project I’d say that both of these tools are
We are off to Tauranga on Monday, off to visit Tony Thornburrow
our sailmaker who is putting his heart and soul into Charlies
sails. We are benefiting greatly from his experience and from
his commitment to doing the best possible set of sails for Resolution.
I suspect that this boat, its planned voyage and the dreams
and adventures that go with it really do appeal. Heres the ad:
Thornburrow Sails are good sails!!!
Tony is a good guy who does a very good job for us whether it’s
a Tender Behind
with that tiny lugsail, Navigator
with its yawl rig or Charlies heavy displacement gaff topsail
cutter with the heaviest storm sails I have ever seen on a boat
of this size.
Also (here's the other ad) we are going to visit Moxon Timbers
across the harbour in Mt Maunganui. We need a lump of teredo
worm proof hardwood for the worm shoe in the aft section of
the keel. I expect to hear from Kerry this afternoon as to what
he proposes to supply, and as its only about 1.4m long ( just
over 4 ft) of 100 x 150 ( 4 x 6) we can take Charlies little
station wagon and lay the back seats down to get it in rather
than tow the trailer over and back.
About Tuesday or so, we’re off the other way to check
out some hard, close grained polyurethane foam with which to
make the plug for the lead keel. That will be stacked up in
the space left for lead, glued up into a big block and carved
into the shape we need for the ballast keel.
We will then put that “plug” complete with countersinks
and holes for the keelbolts into a wooden trough and pour cement
around it to make the mould. We’ll pull the foam plug
out, put rods in to form the boltholes and get it all ready
to pour about 3/4 ton of molten lead into it.
That’s going to be an interesting day.