Here are my step-by-step instructions on
how to build your very own GIANT slingshot. If you
ACTUALLY plan to build one, I recommend the companion document,
"How to build a Slingshot and NOT Hit
Yourself in the Face".
Step 1: Go to hardware store, medical
supply store or any place that sells surgical tubing by the
foot. Surgical tubing, for the uninformed, is super
stretchy, yellowish tubing that can be used to make giant
slingshots! Buy about 10 feet of tubing, more or less
depending on how big your sling shot will be.
Step 2: Improvise a "cup" to hold your
payload for launch. I recommend a flat soccer cone such as
this taped to a rope that has been doubled over and made
into a kind of rope basket. Put a "pull" on the back to
allow you to draw the slingshot back.
Step 3: Cut the tubing in half and tie one
end to each side of the cup (the rope). Ensure that you do
not double the surgical tubing up and attach it to TWO points on
each side of the cup, as this would inevitably make the
Step 4: Find two long, tall, upright
supports (fence posts, 2x4s attached to something, telephone
poles, etc) that are sturdy enough to withstand the pull of the
slingshot. Attach the free ends of the tubing to the
poles. Try to get it so that there is a small stretch in
the tubes when the slingshot is at rest, and so the cup is
centered between the poles.
Step 5: Test fire the slingshot with
nothing in it to ensure the poles are sturdy. Try next
with some sticks and pine cones to ensure proper flingage is
obtained. Once you run out of light, safe stuff, you can
move on to step 6.
Step 6: Find some rocks, shoot them out
into the field. Try big and small, light and heavy.
Too small, and there won't be enough mass for proper flinging.
Too big, and it will overwhelm your tubing. Here is a good
Step 7: After a number of successful
launches, find a rock of the size in Step 6. Clear other
people away, and pull back for the definitive launch. As
far as you can stretch it. Release the rock, if you have
constructed the apparatus correctly, the cup should flip over in
mid-launch, stretch out the opposite direction, and launch the
rock directly back into your face.
Step 8: After finding the source of the
torrent of blood, go to emergency room for stitches (and maybe
Some examples of a giant slingshot:
VIDEO CLIP (NEW!)
Read my Slingshot story here!