This page gives a step by step guide to making the
planked floorboard set for the lazarette
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The Timber
The planks of Western Red Cedar as purchased from a
local timber merchant; 6 planks for the boards (3
per board), and 4 shorter planks for the bearers (2
per board).
(Click on image for larger view)
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Marking out the Planks
Using a print of the drawings, the measurements are
being transferred in pencil to one of the wooden
planks using try-square, metal straight-edge and a
compass for the curves.
(Click on image for larger view)
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Cutting out the planks with a jig saw
After marking out, the planks were carefully cut to
shape using a jig saw, and then the cut edges
sanded smooth with Aluminium oxide grade 80 paper.
(Click on image for larger view)
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Marking the Position of the Bearers and Screw
Pilot Holes
After cutting out the planks, the exact position of
the bearers should be marked out in pencil on the
underside of each plank. The planks will be glued
to the bearers, but to aid accurate assembly of the
components, stainless woodscrews will also be used
(two per plank, attached to the two bearers). The
positions of the pilot holes for the screws are
shown in the sketch plan (by blue crosses). They
are located in the middle of each end of the plank,
on the mid line of the underlying bearer (See
drawings for dimensions).
(Click on image for larger view)
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Drilling a pilot hole
This photograph shows the underside of one of the
planks with the position of the bearer and pilot
hole marked out in pencil. The pilot hole has just
been drilled through the plank, using a 2 mm
diameter drill.
(Click on image for larger view)
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Marking out a bearer
Once the planks have been cut out and the pilot
holes drilled, attention can be focussed on the
bearers. The photograph shows a bearer being marked
out. Note that the bearers are marked out but
NOT cut out at this stage. Not only the outline
of the bearer but also the position of the planks
the bearers will be supporting should be marked out
accurately (as shown in the photograph).
(Click on image for larger view)
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Positioning the first plank on the two bearers
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The next stage is to assemble the components of one
of the boards to enable the fixing screw holes to
be drilled in the underlying bearers. To do this,
place the two marked out but uncut bearers on a
level bench and place the corresponding planks in
their correct final position on top. This
photograph shows the first plank in place ....
(Click on image for larger view)
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... All three planks positioned on the two
bearers
...and this photograph shows all three planks in
place. The pilot holes in the planks can now be
extended into the underlying bearers.
(Click on image for larger view)
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Extending a Pilot Hole
Making sure that the plank is exactly in the right
position, a small power drill is being used to
extend the existing pilot hole in the plank, down
into the underlying bearer.
After all the pilot holes have been extended,
the bearers can be cut to their final profile using
a jig saw.
(Click on image for larger view)
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Before Finishing
The planks and bearers, after cutting out, will
have angular edges as shown in the adjacent
photograph. These should be rounded off with a
sanding block.
(Click on image for larger view)
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After
Finishing
In this photograph all the rough angular edges and
corners have been sanded smooth. These rounded
extremities allow better adhesion of coatings,
lessen the risk of splintering, and make the boards
much easier to handle when installing or removing
them from the boat.
(Click on image for larger view)
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The final page describes the assembly and installation of
the boards.