Spike Insert Holder Keychain

My name is Michael, and I run Track and Cross Country. A common problem I face, is loosing my track inserts, or spikes. I solved this problem by creating a box that would be able to be worn that can hold your spikes. while this is a niche problem, I believe this can also solve problems with other things like loose change.

plastic, 3d printer, something to draft on

I first came up with ideas and problems I wanted to solve.

first step is to draft and create a prototype. This step will include figuring out how it will work.

you will now have to model the box itself. here i determined what the dimensions would be. the height of it is 1 inch and 2 inches in depth. you then extrude it out by 1.25 inches. Next cut in from the top, the thickness of the walls need to be .15 inches. The depth of this will be .85 inches. Now you will cut out the slit for the lid, make it .05 inches from the top, and .15 away from the sides, make it .1 inches thick. Finally extrude a box on the side, make it .5 inches wide, .15 tall. make it .375 away from both sides. extrude it out by .4 inches. Now cut a hole in the middle about .2 inches in diameter, and the center .25 inches from the side. the hole should also be about .19 away from the edge. now fillet the sides of the box to make it easier for the keychain to slide around

start a sketch that is about 2.00 inches long and .95 inches thick. At one end, create another box, this one .05 inches taller on both top and bottom for a lip to grab. Finally extrude by .85 inches.

For the last step you can print and assemble the box.