Marine Fabricator January/February 2023 - 40

Shop Talk Exterior
Photo 3
Sometimes referred to as a fl oating frame, the stanchions for a cantilever frame are
hidden under the top, and this gives it the appearance of a fl oating top.
Cantilever frame
The term cantilever frame, sometimes
called a fl oating frame, refers to the
stanchions that support the frame
(Photo 3). The stanchions are hidden
under the top and give the appearance of
a fl oating top. While a standard horizontal
frame will have two vertical support
stanchions near the radius of the main
frame, the cantilever support stanchions
also attach at the radius but run parallel
to the main tube. The standard vertical
supports are stronger and should be
used on large-beam boats and full-length
frame systems. The cantilever system
does have its limitations and may require
fi ttings to bridge between the stanchion
and the main tubing for strength.
Photo 4
Image 5
Photo 4 shows the Northcoast Quick Bow Bender which easily handles radius bending,
crowning and compound crowns. Image 5 shows how to use simple arithmetic to
calculate the beam and length of the frame without the Quick Bow Bender.
Photo 6
Including a compound crown in addition to a normal crown adds strength and
proper watershed.
40 Marine Fabricator | January/February 2023
Bending benefi ts
Building a horizontal frame system
is a canvas person's dream! There is
less tubing involved, and the math is
as basic as math gets. Because you
are building on a fl at plane, there are
no arcs, tangents, radii or angles to
calculate. We build horizontal frame
systems by hand using 1.25-inch
stainless steel in .065 wall thickness.
The Northcoast Quick Bow Bender
handles the radius bending, crowning and
compound crown with ease (Photo 4).
Even our employees who weigh less than
130 pounds will bend the steel by hand on
a regular basis. However, your shop may
have a different type of tubing bender. No
worries. Simply bend a 90-degree sample
and measure the diameter and circumference
of the radius. Once you have that,
you can calculate the beam and length
of the frame using simple addition and
subtraction (Image 5).
I fi nd that adding 4 inches to the beam
(width) measurement will provide enough
additional pipe required for both the crown
and compound crown (Photo 6). We suggest
that you always include a compound
crown in addition to your normal crown
for added strength and proper watershed.

Marine Fabricator January/February 2023

Table of Contents for the Digital Edition of Marine Fabricator January/February 2023

Marine Fabricator January/February 2023 - Cover1
Marine Fabricator January/February 2023 - Cover2
Marine Fabricator January/February 2023 - 1
Marine Fabricator January/February 2023 - 2
Marine Fabricator January/February 2023 - 3
Marine Fabricator January/February 2023 - 4
Marine Fabricator January/February 2023 - 5
Marine Fabricator January/February 2023 - 6
Marine Fabricator January/February 2023 - 7
Marine Fabricator January/February 2023 - 8
Marine Fabricator January/February 2023 - 9
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Marine Fabricator January/February 2023 - 12
Marine Fabricator January/February 2023 - 13
Marine Fabricator January/February 2023 - 14
Marine Fabricator January/February 2023 - 15
Marine Fabricator January/February 2023 - 16
Marine Fabricator January/February 2023 - 17
Marine Fabricator January/February 2023 - 18
Marine Fabricator January/February 2023 - 19
Marine Fabricator January/February 2023 - 20
Marine Fabricator January/February 2023 - 21
Marine Fabricator January/February 2023 - 22
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Marine Fabricator January/February 2023 - 28
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Marine Fabricator January/February 2023 - 30
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Marine Fabricator January/February 2023 - 40
Marine Fabricator January/February 2023 - 41
Marine Fabricator January/February 2023 - 42
Marine Fabricator January/February 2023 - 43
Marine Fabricator January/February 2023 - 44
Marine Fabricator January/February 2023 - 45
Marine Fabricator January/February 2023 - 46
Marine Fabricator January/February 2023 - 47
Marine Fabricator January/February 2023 - 48
Marine Fabricator January/February 2023 - Cover3
Marine Fabricator January/February 2023 - Cover4
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https://www.nxtbook.com/ata/marinefabricator/marine-fabricator-january-february-2024
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https://www.nxtbook.com/ata/marinefabricator/marine-fabricator-september-october-2022
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https://www.nxtbook.com/ifai/marinefabricator/marine-fabricator-january-february-2022
https://www.nxtbook.com/ifai/marinefabricator/marine-fabricator-november-december-2021
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