Article Title: Professional Tips for Lofting the 3 Most Common
Elements
Author Name: Morten Olesen
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Word Count: 639
Category: Recreation and Sports: Boating
Copyright Date: 2012
Web Address: http://www.boatplans.dk/
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Professional Tips for Lofting the 3 Most Common Elements
By Morten Olesen © 2012, All Rights Reserved
Building your own boat could be the culmination of a lifelong
dream, or an impulsive project if you're the avid woodworker. In
either case, the amount of learning that goes into following a
boat design and crafting the panels can look daunting.
Lofting, in particular, is a drafting technique that takes a
keen eye for shape, a good head for mathematics, and confidence
in your woodworking talent. Don't fret. becoming a lofter is
easier than you think once you master the 3 most common elements.
Plus, learning this new skill will open up a world of design
options for your building projects.
Getting Started
Assembling your lofting tools in advance will help you go
through the steps with more ease. Most of the materials are
common household tools, like a pencil (ink from a pen may soak
into the wood grain), measuring tape and carpenter squares.
You'll also want to buy some lumber filler to construct your
curves and arcs.
Reading the Boat Plans
Each of your boat plans is based on a set of drawing files.
You'll see top-down and profile perspectives, dimension of the
elements like offsets, diagonals and buttock lines; assembly
details and more. If you purchased 3D boat plans, you'll also
have the added advantage of being able to slice, dice and rotate
the plans via computer to see every possible angle.
Curve Lofting
Curves in panels can be challenging if you're a new lofter, but
like all elements of the boat plans, are based in scale numbers.
Take a close look at the panel plates; on some boat plans the
dimensions are depicted in both U.S. standard and metric units.
Be careful not to mix the dimensions as you make your cuts!
Curve panel lofting begins with a grid, drawn with vertical
lines using a carpenter's square. Once you've finished marking
your grid on the plywood, it will resemble a football field. Set
out the dimensions of the panels, marking with a pencil along the
long edge of the plywood.
With that done, make the curvature of the panel. One of the most
recommended ways is to hammer in small nails at the cross-points,
then fit the lumber fillets to the nails. Hold the fillet in
place with some extra nails or weights. Repeat the procedure on
the other side of the panel, then use your circular or saber saw
to cut the curve out of the panel.
Symmetrical Lofting
You may find lofting symmetrical elements, such as the nesting,
easier than the curved panels. A file based on symmetrical pieces
will show each piece as part of the overall boat plans. Some
symmetrical elements have dimensions set from the centerline,
which makes the centerline part of the symmetry line.
A carpenter's square will be your tool to set the centerline on
the plywood. You'll mark the dimensions on the wood from the
horizontal distances. Afterward, you can draw the out-line of the
element by connecting the points you marked with straight lines.
Finally, you'll draw the inside of the element, starting with the
vertical sideline
Perpendicular Lofting
Your boat plans will include perpendicular elements that are
relatively easy to configure. Create a straight line (12 inches
long, for example). Then, with your measuring tape, make a mark
approximately perpendicular to your line, in this case about 16
inches from the first line.
From the other end of your first line, mark 20 inches in the
direction of the mark you made from the first end of the first
line. Mark the distance where it crosses the first mark, and you
will have a triangular-looking figure. Where the points cross,
the lines are perpendicular.
While you hear a lot of talk about the challenges lofting
presents, once you've learned the right way to do it, you'll do
it more quickly and confidently.
Morten Olesen is a master boat builder and Naval Architect.
Visit http://www.boatplans.dk to get his exclusive line of boat
plans that includes 3D computer models plus a free Boat Builder
Master Course with your order.
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