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Handcart
Background for The Project:
As is the case for almost all of my
woodwork projects, the idea for a handcart was conceived as a result of an
actual problem. Carrying home ones groceries is often a quite tedious task
- especially if one has several heavily loaded bags, and if one wants to
shop a little around after buying all the necessaries, the heavy bags also
make it difficult to relax and enjoy oneself. Having a car would solve
problem, since the groceries could be locked in the trunk while the
shopping continues, but what about those who do not own a car? The problem
was achieving the advantages of having a car when grocery shopping,
without actually owning a car. The solution, I found, was to build a
handcart. Choice of materials:
One of the first decisions I made was to make the handcart out of wood (I
love wood). The type of wood I chose was pinewood. This type of wood is
strong, cheap and beautiful and the surface of this type of wood is also
easily treated so that it can withstand the elements. However, when
working with cutting tools like a rabbet or saw, the resin that sometimes
can be secreted from this type of wood, can cause problems. All screws are
Climate screws, which will not rust when exposed to water or dirt. I also
used strong bolts, wood glue, and a number of different types of tools,
and also a turn-disc used for TV-tables (something that I will get back to
later in this text.)
The different Phases of the Project: The construction of
the handcart can be divided into three steps:
1: Construct a box-shaped container of suitable size, which can be locked
shut.
2: Equip this container with wheels and a steering mechanism.
3: Treat the surface of the finished handcart, so that it can endure the
elements.
1: Construction of The Box-shaped Container This was
probably the easiest part of the project, and I am not going to get into
any great details concerning its completion. In order to conctruct the
box-shaped container, a simple square-shaped frames is constructed and
fitted with wooden plating. The lid and the box itself are put together
with hinges. All you really need to be able to do is
saw straight. Turning
a big wooden box into a handcart - that is where the beef lies.
2: Equipping The Container with Wheels and A Steering Mechanism
My idea for how the box was to be equipped with wheels and a steering
mechanism was based on the idea of a handcart with two front- and back
wheels, where the front wheels are connected to a steering device, which,
at the same time, would be used to pull the handcart - in other words; a
quite traditional design. To start, I had to get hold of a sizable
block of wood which could hold both the front wheels and the steering device. I
started by making two big holes in this solid block of wood. Through these
holes I then placed
two short pieces of wood, which are locked tight with
strong bolts, enabling the block of wood to both secure the front wheels
and to connect to the steering mechanism which in this way can be tilted
up and down. The holes one can see in the picture are for the bolts that
hold the
steering stick, which also has fitted holes for these bolts and
in the other end - a handle. So far so good, but we still need to
attach the front wheels to the block of wood and attach this block to the
box in a way that ensures that it can be turned from side to side. The is
where the previously mentioned turn-disc comes in. It consists of two
metal plates, which are attached to each other with a set of ball bearings
between them to avoid any friction. The turn-disc is
normally used with a regular TV table. Unconventionally, this turn-disc is placed between the
block and the box. As you can see,
metal plates and clamps secure the
metal stick which functions as an axel for the wheels. The purpose of the
metal plates is to prevent the metal axel form digging into the wood,
eventually working itself loose.
The hind wheels are mounted in a similar
manner; without a turn-disk of course. Now all that is left to do is to
attach the steering stick to the block of wood, before we are ready to
treat the surface of the handcart. Notice the pictures of the handcart in
the right side of the page. As can be seen, the handcart can also be
locked to a number of thing by way of a pipe clamp mounted on the side of
the cart.
3: Treating The finished Handcart The best way to protect pine
wood is to treat it with some kind of oil or sealing wax. I really wanted
to accentuate the beauty of the naked wood, while also making sure that
the surface coating would be extremely durable. This is why I chose to use
a terpentine based clear coat sealing wax, normally used for wooden panels
and the deck of a ship. The first layer of sealing wax should consist of
an equal amount of sealing wax and terpentine, so that it can be absorbed
into the wood. Hereafter, three more layers of pure sealing wax is applied.
In between each coating, one can use a fine grained sand paper, to ensure
a stronger and more beautiful finish. Since the year 2001, the handcart
has been exposed to sun, rain, snow and frost, without showing any signs
of wear and tear. |
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