Band saws are the best tool for cutting a Pinewood
Derby car block. If you don't have access to a band saw, a coping
saw will do. Coping saws are economical and can cut unusual
shapes and curves.

Coping Saws are intended for cutting curves in thin
material but they can be used for cutting your Pinewood Derby car. The
thin blades on coping saws make the saw tend to drift away from the
desired cut so you need to carefully watch the cut. You will have
better results if you are cutting a straight line it you use a Keyhole
or Compass saw.
Never use a saw with teeth that are bent, broken,
or dulled or a handle that is loosely attached. Nothing is more aggravating
than working with a beaten-up or dull saw. Most saws cut when
you push the blade into the wood but coping saws cut during the pull.
This prevents the thin blade from buckling.
Before cutting your block, you will need to decide
how your car will look. Draw some shapes on a piece of paper until
youi decide on the shape that you would like to use. Now you can
make a template of the outline of your car.

First, trace the outline of your Pinewood Derby car block on a blank piece
of paper with a sharp pencil. Be sure that the axle holes are facing up.
Mark the position of the axle holes on the paper as dots.

Next draw the outline of your car inside the block outline that you just made.
Be sure that the outline stays at least 1/4 inch away from the axle
holes.
Now
carefully cut out your car outline and place it on the block. Be
sure that the axle marks on the paper line up with the axle marks
on the block. Then use a pencil to trace around the edge of the paper
onto the block.
The
result should look like this.
Next, turn your paper template over, place it on
the other side of the block and trace its outline on the block. Make
sure that the front of the car is on the same end of the block for
both sides.
Example
of a curve cut by a coping saw. |
To begin a cut, set the saw blade down where the line you marked
meets the edge of the block. Keep the saw at a right angle to
the block so that it cuts through both sides of the block equally.
Push the saw away from you. It shoud make a little groove in
the wood. Lift the saw up and move it towards you and set it
into the groove. Then push and pull the saw back and forth. |
Keep a little pressure on the blade but don't bend
it. Watch the blades progress along the line. It should follow the
line on both sides of the block. If the blade starts to wander,
twist the handle of your saw to glide it back.
Some general suggestions for sawing:

It is hard to start a cut at a steep angle. It will
be much easier if you use a file or rasp to begin the cut then finish
it with the saw.
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Using a coping saw is a test of skill as it can
be difficult to control and requires practice. You might want
to make a few cuts on a piece of scrap wood before cutting your
Pinewood Derby car block.
-
It will be easier to cut if you clamp the car
block to the work surface. The line you plan to cut should hang
over the edge of the surface.
-
Start by making short gentle strokes. Take longer
cuts when the saw is a quarter inch or so in the wood.
-
Go slow, and watch carefully to make sure the
cut is staying on the line. If the cut begins to wander, either
start the cut from the opposite side or come in from a different
angle.
More about how to use a coping saw
A high quality
coping saw with five blades and a rasp is available from our Product
Catalog. |