Slingshot
thingiverse
This slingshot features easy-to-hold plugs and is designed using Blender software. To assemble, print all parts, insert rubber into the holes, and secure with wider side plugs. Note, images are renderings; I don't currently have access to a 3D printer.
Download Model from thingiverse
With this file you will be able to print Slingshot with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Slingshot.