How to Build a popsicle stick trebuchet
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How to Make a Popsicle Stick
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Very difficult to build-you might not get it finished
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Tricky to tune so it shoots well
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Three pieces of string:
3"
3" with a loop tied in the end (Tie the loop first, then measure)
12"
1X3" piece of plastic grocery bag
A 1 ½" Finishing Nail
A paperclip
Fishing weights
Hot glue
How to Build It:
• Make the base.
• Glue together six sticks in a square, "log cabin" style.
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How to Build a popsicle stick trebuchet
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• Make the uprights
• Glue two sticks together for strength. This is your upright.
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• Glue a half-stick to the side of the upright as shown below. It should stick out about
1/16 of an inch past the upright. This is your cross-beam.
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• Reinforce cross-beam with another half stick as shown below.
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• Repeat previous three steps to make a second upright.
• Attach the uprights to the base.
• Glue the uprights in the middle of the thick sides, with the cross-beams pointing in.
• There should be a space of at least 3/8" between the cross-beams.
• Using four half sticks (two on each side), make braces on each upright, forming an
upside-down "V".
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• Build the Throwing Arm.
• Make the arm:
• Connect two full sticks with a half stick, as shown. This is the bottom of the arm.
• Glue a full stick into the space on the top side of the arm.
???How could changing the arm length affect the performance of the catapult?
• Get an adult to help drill two holes in the bottom of the arm, about ¼" and ¾" up from the
bottom.
• Attach the sling and the pin
• PIN: Using pliers, bend a piece of stiff but thin wire (a paperclip works perfectly) into a
sharp "J" shape.
• SLING: Cut the ends of your plastic into "V" points. Using a small dot of glue, attach a 3-3
½ " string to one point. Attach a 3" string with a loop on the end to the other point.
• Glue the pin to the top of the arm so the top of the "J" sticks out about 1/8". Use plenty of
glue for this: It has to be on very solidly.
• While the glue on the pin is still warm, attach the end of the straight string. The sling and
the looped string should hang down freely.
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• Attach the throwing arm to the base.
• Insert the nail through the upper hole in the arm.
!! You might have to really work it to get it through. BE CAREFUL NOT TO STAB
YOURSELF!
• Using plenty of glue, attach the ends of the nail to the cross-beams.
!! If your catapult breaks, it will probably be at this joint, so use plenty of glue and make it
secure!
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• Attach the Weights.
• Tip your trebuchet forward so the bottom of the throwing arm is touching the table.
• Insert your 1' string through the bottom hole on the arm.
Use the string to tie on the desired weights.
??How will changing the amount of weight affect your catapult's performance? Are
there any risks?
• Firing
• Loading and releasing
• Fold the sling in half over your projectile.
• Place sling loop over pin.
• Pull throwing arm down to the ground, with sling lying flat on ground pointed
toward base.
• Hold sling in place with one finger. Quickly remove finger to release.
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• Tuning.
!!Make small adjustments, one at a time, until you achieve the desired
performance. Making huge adjustments, or several adjustments at a time, can have
unpredictable results!
• If sling doesn't fly over the top of the throwing arm, you need either more weight or
a lighter projectile.
• If loop doesn't release, you might have twisted sling strings, or your pin might be too
long, nicked, or gunked up with glue.
• If trajectory is too high (the projectile flies straight up or backwards), use pliers to
bend pin slightly forward. This will delay the release of the sling, making for a flatter
trajectory.
• If trajectory is too low (the projectile flies downward into the ground), use pliers to
bend the pin slightly backward. This will release the loop sooner, causing a higher
trajectory.
Craft Sticks - Natural 150 count by Chenille Kraft
Popsicle sticks have been a staple of easy and creative fun for as long as there have
been popsicles. A little glue, paint or other things can really set the creative wheels
in motion. Here is a book of more projects with craft sticks
Look What You Can Make With Craft Sticks: Over 80 Pictured Crafts and Dozens
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of Other Ideas (Craft)
Desktop Trebuchet Defend your desktop! The mere presence of this
striking machine on your desk will induce fear and respect among your
peers. Take charge and besiege your opponents with a fully functional,
genuine trebuchet for your desk! It really works! It takes about two to four
hours to assemble, which is a joy in itself with the hand selected wood and
computer-controlled, precision cut parts. The professionally designed kit
and fully detailed instructions - 10 pages of descriptions and tips, with of
photos of every step - makes assembly a breeze. All you really need is some
glue and a pair of scissors. For a more refined look, a little sandpaper and a
small, round file would be helpful, but are entirely optional. Performance! This mighty desktop
artillery is capable of hurling the wooden ball projectiles (included) over twenty feet! Just load-up
the counterweight bucket with about 150 pennies and you are ready to go!
The Miniature Trebuchet - The trebuchet was the ultimate artillery weapon
of the medieval period and early renaissance. A large and unwieldy
weapon, it was typically built on-site during battle, and tuned to lob great
weights - such as the carcasses of rotting horses and pots of burning pitch,
over the castle walls and onto its inhabitants. This is our newest and
smallest trebuchet design in a long line of catapult kits. Designed by master
trebuchet expert Ron Toms, this machine is ideal for the student on a
budget or as a wonderful display piece for any desktop or bookshelf of any
history enthusiast. Precision carved by computer controlled machinery for guaranteed fit and
accurate joinery. The detailed instructions include loads of photos of each step of the construction
process, tuning tips and safety notes. Included in the kit are four wooden projectiles, all the necessary
components for the sling, trigger, and counterweight bucket as well as all the parts for the kit. The
only thing you'll need to supply are 64 pennies for counterweight and a few simple tools - Scissors, a
ruler, a utility knife, wood glue and a few rubber bands to hold the pieces together while the glue
dries. Tools required: Scissors, Glue, Ruler, rubber bands and a utility knife. Sandpaper is optional.
Additional Counterweight Required: 64 pennies. Range: About 10 feet.
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