Final Design

We opted for an equipment with the characteristics we had actually established as ideal throughout testing: a solid, diamond-shaped inner framework, a weak crushable outer shell,and also thin spikes on the outside. We surmised that this outer shell would certainly dedevelop on impact and also absorb kinetic power, as well as lengthen the decelerationdistance of the egg and thereby reduce the force on it during landing.

You are watching: Egg drop project toothpicks and glue

Materials

Several boxes of toothpicks Hot glue, about 5 big sticks Raw Egg Hot glue gun

Instructions

NOTE: Make your glue joints in the crush structure solid enough to organize together, yet not so strong that they will not break during landing. Also, blowing on joints as they"re drying mostly does even more damage than good by changing the toothpicks away from the joint.

Select 4 toothpicks then develop a square with them by lining up each finish at a ideal angle and making sure each of the 2 oppowebsite sides are parallel. Once satisfied through the general form dab a little percent of glue at each vertex.
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Select three toothpicks then produce a “U” form, basically the same number as before, other than one side will certainly be removed, then dab a tiny percent of glue at each vertex.
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Repeat the over step 3 times.Begin through the square shape, then attach a “U” to one side through glue at the 2 vertexes. Connect 2 more “U’s” in parallel utilizing the warm glue.
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Repeat actions 1-4 so that an additional one of these shapes is developed.Select one of the long sides of the 4x1 shape and also attach one tooth pick aiming ameans from the structure to each joint utilizing a dab of glue.
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Repeat step 6 on the other 4x1 so the exact same shape is produced.Connect the two 4x2 pieces by lining up the open ends of each form in parallel and joining each intersection through a dab of glue.
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Next off choose 4 toothpicks and also finish the 4x4 grid by connecting them perpendicularly to the joints made in the previous action with a dab of glue.
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Next develop in the upward direction by attaching one toothpick via a dab of glue to eextremely joint on one side of the grid. The toothpicks must be oriented so that eincredibly angle in the number is 90 degrees. The upward picks need to be perpendicular to the grid.
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Eincredibly upward extfinishing toothpick, except for the one in the extremely center then demands to be extended another pick up. Placed a pick on each pick from the previous action in parallel and also area a dab of glue at the area where the two tips accomplish.
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Repeat steps 1-11 so that two of the numbers over exist.Now the rigid facility requirements to be created; this is where the egg will certainly sit. To perform this incorporate teams of 3 toothpicks in parallel in order to make a more powerful member. This is most conveniently achieved by placing two toothpicks in parallel, poignant one one more, and running a line of glue in in between them.Then, before the glue dries, place the 3rd pick on optimal of the glue line.
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Repeat the above procedure 12 times.Take the 12 rods and sepaprice them right into groups of 2. Then, create 6 “L” shaped frameworks by lining up 2 rods perpendicular, placing the tips together, and also gluing the joint where they meet.
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Take two “L” forms and develop a square utilizing the same approaches as in Tip 1.
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Select two “L” shapes and also glue the vertices from each item to one another at a 90-level angle.
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Repeat the over step as soon as even more, so 2 pyramids exist.Create a diamond by connecting a pyramid to each side of the square by gluing a leg of the pyramid to a equivalent vertex of the square. Before the diamond is completely enclosed place the egg inside.
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Now the facility diamond and the two halves of the outer cube need to be linked. Place among the taller ends of the diamond on the brief toothpick from among the halves. Glue this link, as well as the 4 corners to their matching upward picks.Place the continuing to be half of the cube on peak of the other so that all the toothpicks facing upward are parallel. Glue the unattached side of the diamond to the opposite side"s short pick.Gather a big amount of toothpicks, and also glue eincredibly connection between the two halves through a tiny dab of hot glue. Before the glue dries on each link, place a pick, perpendicular to the upward picks to finish the middle grid/area of the cube.
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Finally, add the spikes. Glue 3 single toothpicks at varying angles outside on each of the 6 vertexes of the cube. Then, produce 24 rods 2 toothpicks lengthy, and also glue 4 of them on each side on the middle square of toothpicks. They must confront upward and outward. They will help the crush structure to break the device"s autumn.Done!

Blueprints


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Hand-attracted blueprint
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Side see of the device, mirroring the spikes

The Finimelted Device

We finiburned the drop gadget just in time, and also course ended before we were able to glue on every one of the spikes. However, we were able to obtain the halves joined together securelyand the inner shell attached, so the gadget was even more or less sensible. We initially offered colored toothpicks for components of the inner and also outer shells, until we ran out. We struggled a bitthroughout develop through obtaining thewarm glue joints right: too bit glue, and the toothpicks won"t stick; also much and the joint will certainly take forever to cool, as well as not decreate appropriately throughout landing.


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Top corner view
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Side see, with an extra helping of blur

The Drop

All of us were pretty pessimistic around the just how our gadget would fare on Drop Day, yet we were in for a surpclimb. As Hunter threw it off the balcony,we all watched with bated breath, waiting for the inescapable failure. However before, as it hit the ground, I was motivated by how well the structure decreated and also took in the influence. Could it be…

My really hopes were evidenced as Drew hesitantly walked over and inspected the gadget. The egg had actually survived! Yes! We"d done it!

We were also successful in the second, greater, extra-credit drop, proving that our device might manage a lot more than we initially threw at it. However before, each drop left a huge dent in the crush structure, and also I doubt that it could withstand many type of more drops without repairs, particularly if it landed on the already-crumelted spots. It"s definitelynot a very reusable tool. Luckily, it won"t need to be dropped any type of more, as having actually survived its trials, it"s now hanging on Mr. Corman"s ceiling.

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The device after the initially drop. The crush structure is visibly decreated.

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Drop Video


This video reflects both drops, in sluggish activity. Notice how little bit rebound tbelow is, because the dedevelopment of the crush framework absorbed all of the kinetic power of the falling device.