👉   Play freely and build endless fun at home with STEMFIE, the free 3D-printable educational toy   👈 

Here is another STEMFIE catapult project with fewer parts; it will print in just a few hours. You can press and hold the catapult's base on a tabletop and shoot the ping-pong ball by quickly pushing down the beam. 

STEMFIE.org Simplified Desktop Catapult v01


Quick-print sample

STEMFIE.org Quick print sample shoulder screw pin nut washers brace

The STEMFIE Quick-print Sample file is an easy way to test a few STEMFIE parts and fasteners. You can also check the STEMFIE Calibration File for more elaborate types of fasteners.



STEMFIE is a free, open-source, 3D-printable construction set toy that helps children learn STEM! Download the files freely, and please support my efforts to expand this project.