A prototype is a preliminary model of something. Projects that offer physical products need to show backers documentation of a working prototype. This gallery features photos, videos, and other visual documentation that will give backers a sense of what’s been accomplished so far and what’s left to do. Though the development process can vary for each project, these are the stages we typically see:
Proof of Concept
Explorations that test ideas and functionality.
Demonstrates the functionality of the final product, but looks different.
Looks like the final product, but is not functional.
Appearance and function match the final product, but is made with different manufacturing methods.
Appearance, function, and manufacturing methods match the final product.
Build your very own desktop catapult! These kits make a great 1:24 scale model or a fun office toy. Each kit comes with everything you need except a hammer and scissors. The parts are CNC machined to insure a precise fit. The baltic birch wood is sanded, stained, then laser cut. The brass pins and wheels are machined from solid brass.
Forget the glue!
These catapults are designed to be assembled without any glue. They utilize dowel pin and mortise joints for assembly. Simply match the pieces. Drive the brass pins in. Then snap together.
Small in size, big on power
While standing only 4 inches tall, these catapults can throw objects over 35 feet! Objects that weigh around 1 gram get launched the farthest. Heavier or lighter objects, like pennies and paper wads, can be launched up to 18 feet. Making these catapults perfect for office battles!
1-2 hour assembly time
Utilizes dowel pin and mortise joints for assembly
no glue required
Can shoot up to 36ft
CNC machined solid brass parts
Laser cut Baltic birch
5" x 3.5" x 4.5" (L x W xH)
Pick how many catapults or trebuchets you want to get. When the project is over you will have the option to choose between a stained or unstained kit. (See pictures below)
Trebuchets (added on 1/3/18)
These are improved versions of the original Trebbers kit! To see specs/info on the original trebuchet kit go here. To see what has been improved go here.
I need $14,000 for machine upgrades, raw materials, and shipping. I also need to reach MOQ's on the CNC machined brass parts.
Please note that your country might have import fees or VATs.
Risks and challenges
I have made several successful design prototypes. They all have been thoroughly tested and work flawlessly. The only difference between these and the reward ones is the manufacturing process for the brass parts.
The reward ones will have CNC machined brass parts. Whereas the prototype ones had mostly handmade brass parts. (they were done on a manual lathe in the video)
Some stuff that I still have to work on: