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3D Models of Catamarans: STL Files for RC and Toy Boats

This collection gathers catamaran 3D models that range from motorized twin-hull boats to small water toys and simplified display pieces. Most of them are made for 3D printing in several parts, so the hulls, decks and fittings can be scaled or replaced. It is a useful starting point if you want an STL boat project that is more stable on water than a single-hull shape. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

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選定基準：Polyzon編集部 · 本文の更新日：2026年10月14日

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«3D Models of Catamarans: STL Files for RC and Toy Boats»

The models differ mainly in how they are meant to move. RC versions include space for a motor, shaft and rudder, and often a separate compartment for electronics. Balloon-driven boats use a nozzle at the stern and a simple hull, while sailing versions carry a mast, boom and keel or ballast. Pedal and spring mechanisms appear as an alternative for models that are pushed forward without any electronics, and stylized catamarans skip propulsion entirely and focus on shape.

Before printing, look at the author's page for hull wall thickness, how many parts the model has and how they join, and whether supports are listed. Check the material and settings the author mentions: parts that stay in water are often printed in PETG or ASA rather than standard PLA, with enough perimeters to close the shell. If the model is motorized, confirm the bay dimensions and the shaft diameter against the hardware you already have, and look at photos of real prints to judge how the seams and deck fit together.

Search results widen quickly once you change the wording. Besides catamaran, try twin-hull boat, RC boat, sailboat, bath toy or watercraft, and add modifiers such as rc, sail, balloon, spring or toy. Related topics like hovercraft, trimaran, tugboat or submarine hulls often use the same electronics and sealing approach, so they can be worth browsing when a specific hull does not match your plans.

FAQ

よくある質問

Do catamaran models need supports when printing?
It depends on the hull shape. Flat-bottomed and split-hull versions often print without them, while rounded decks, masts and thin fins usually need supports on overhangs. The author's page normally states what was used.
Which material works for a 3D-printed boat that goes in water?
Many builders choose PETG or ASA for parts that stay wet, since they tolerate moisture and impacts better than standard PLA. Layer height, wall count and infill also affect how the hull behaves, so follow the settings listed with the model.
How do I scale a catamaran model to fit my motor and battery?
Measure the motor mount, shaft and battery bay first, then compare them with the dimensions given for the model. Scaling changes wall thickness and fit, so it is usually safer to adjust the internal parts than to resize the whole hull.
Can a catamaran model be printed without electronics?
Yes. Balloon, spring and pedal versions, as well as plain display models, need no motor or receiver. They are a simpler way to test how a twin-hull shape sits and moves on water.
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