Launchers, Lobbers, and Rockets Engineer by Lance Akiyama

Author:Lance Akiyama
Language: eng
Format: epub
Publisher: Rockport Publishers
Published: 2018-12-09T16:00:00+00:00

ROLLER-AMPLIFIED MANY-THING SHOOTER

To fully harness the energy of a 7" (18 cm) rubber band, you’d need to stretch it out more than 24" (61 cm), which is quite unwieldy for a DIY sidearm! The roller-amplified shooter solves this by stretching the rubber band from the back of the frame, to the front, and then to the back again. Additionally, a small roller at the front of the frame allows the rubber band to be stretched evenly, ensuring that each shot achieves maximum power!

TOOLS AND MATERIALS

• three 12" × 1" (30.5 × 2.5 cm) wooden paint stirrers

• utility knife

• sandpaper (optional)

• drill with 1/4" (6 mm) bit

• hot glue

• ballpoint pen casing

• 1/4" (6 mm)-thick wooden dowel

• 7" × 1/8" (18 cm × 3 mm), size #117B rubber band

• wooden clothespin

• three wine corks

• craft foam, card stock, or cardboard

• another, smaller rubber band (optional)

MATERIAL SUBSTITUTIONS

Wine corks: Find another sturdy material for the handle, such as a piece of wood. Instead of cutting corks for projectiles, use pencil erasers or other dense, but soft, objects

MATERIAL REQUIREMENTS

The inner diameter of the ballpoint pen casing must be greater than the width of your dowel. If it’s not, find another material that can act as a durable cylinder, such as a marker.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.