BOB KNETZGER is a designer/
inventor/musician whose award-
winning toys have been featured on
The Tonight Show, Nightline, and Good
Morning America. He is the author of Make: Fun!,
available at makershed.com and fine bookstores.
Rock crushes scissors, scissors cut
paper — but bubbles rule them all
PROJECTS Toy Inventor’s Notebook
Written and photographed by Bob Knetzger
Bubble
Plane!
Here’s a super simple mini-toy: a plastic bubble
tip for a paper airplane. Dip it in bubble solution
and give it a toss. It leaves a puff of bubbles as the
plane darts away. Reminds me of the miniature
plastic prizes that used to be in boxes of Cracker
Jack or vending machines: tiny toy, big fun!
Go to makezine.com/go/bubble-plane to get
the .svg vector graphic file to cut the bubble tip on
your laser cutter (Figure
A
).
You could make this small part by manually
cutting and drilling, but the ability to laser-
engrave the radial ridges is really super neat and
easy. The ridges increase the surface area of the
bubble ring to hold more soap solution.
108 makezine.com
TIME REQUIRED:
1–2 Hours
DIFFICULTY:
Easy
COST:
$5–$10
MATERIALS
» Acrylic sheet, 1/8" thick
» Paper
» Bubble solution
TOOLS
» Laser cutter
M83_108-9_TIN_F1.indd 108M83_108-9_TIN_F1.indd 108 10/11/22 10:54 AM10/11/22 10:54 AM
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