Straw-Cat Sailboat 3D-Printed Catamaran Kit

A real thing, made fresh for you when you order.

Product pictures are made from the 3D model, not photographed.

$12.99

Plus $7.95 flat shipping to US addresses.

Color: Gray

How many

Made to order. We print it in the USA after you buy, so print time comes before ship time.

Flat $7.95 shipping. Made in the USA. Broken or wrong? Send a photo within 30 days and we reprint it.

What it does

Prints in parts so you can build a working sailboat, teaching how wind and sails really work
Race your boat in a shoebox of water by blowing through straws, so kids learn physics through play
Adjust the sail, rudder, and angle to sail sideways into the wind, showing how boats move in any direction
Uses simple materials like soda straws and plastic, so you spend time learning instead of buying supplies
Made in the USA from the US design community, supporting makers and educators

Your kids will build a real catamaran and race it across water while learning how sailboats work. This 3D-printed kit teaches physics through hands-on play instead of textbooks.

The boat comes as printed parts you assemble with soda straws and plastic wrappers. You power it by blowing through a straw to move the sail. By adjusting the sail angle and rudder, you can steer the boat into the wind, proving that boats don't have to go the way the breeze pushes them. This discovery hooks kids on how physics shapes the world around them.

Perfect for classrooms, science fairs, or home learning. Each boat races in a shoebox of water, so setup takes minutes and cleanup is easy.

946 downloads in the maker community. That is interest in the design on the site it came from, not our sales.

How big it is

Size: 83 × 85 × 16 mmabout the size of a soda can
Made: In the USA, printed when you order

Sizes come from the real model file, not a guess.

What you get

One printed piece, in the color you pick.
Nothing else to buy. It works as it arrives.

What it is made of

PLA, printed in one solid color. Compare the materials.

Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.