Spinblade – Battle Spinner V2 Bayblade Style Toy

🌀 Spinblade – Modular BattleSpiner

A mechanical fidget designed around the realities of 3D printing

Spinblade is my take on a Beyblade-style spinning toy — but designed specifically with FDM 3D printing in mind.

From the beginning, the goal was to create a fully printable mechanical system that works reliably despite the limitations of layer adhesion, surface finish, and dimensional tolerances. Every part was shaped to respect how FDM actually behaves — not how it should behave in theory.

It’s both a mechanical project and a fidget-style battle spinner.

🔩 Modular Disk Architecture

The disk is built from three main components:

a central base

interchangeable outer rings

central pin

The rings mainly differ visually, featuring different tooth patterns, but they also subtly influence contact and spin behavior.

The locking system uses a flexible snap-over protrusion. It can be assembled and disassembled repeatedly without damage. Both PLA and PETG work well, although PETG handles repeated stress more comfortably.

Tolerances are intentional and relatively tight. A poorly calibrated printer may result in either a loose snap or a ring that feels too tight. With a properly tuned machine, the engagement feels clean and controlled.

⚙️ Launcher Mechanics

The launcher is based on a 1:1 rack-and-pinion system using a 12-tooth printed drive gear.

A toothed rod converts linear motion into rotational force.

The drive gear is fully printed. The goal was to keep the system accessible and fully printable without additional hardware.

Retention & Release System

The disk holder includes symmetrical retaining protrusions that hold the disk during acceleration. As the launcher spins up, centrifugal force helps keep the disk engaged.

When the toothed rod is fully pulled out, a flexible locking pawl springs into place and stops the drive gear abruptly.

The sudden stop, combined with the disk’s inertia, causes it to disengage cleanly from the holder.

Tests showed that inertia alone can sometimes release the disk, but without the locking pawl the gear may continue rotating, causing inconsistent release. The pawl ensures a predictable launch cycle and avoids frustration.

🖨 Designed for Printing

Print orientation matters.

Each part was intentionally oriented in the print profile to:

- strengthen load-bearing directions

-eliminate supports using controlled overhang geometry

-improve press-fit alignment

For example, the central pin on the disk is printed on its side with a flattened profile. This improves concentricity, ensures better press-fit engagement with the base, and reduces wobble during rotation.

All parts are pre-oriented correctly in the provided print profile and should be printed as placed.

The project has been tested on:

-Bambu A1 mini

-Bambu P1S

-Prusa MK3S

-Ender 3 V2

-Custom-built printer

🖨️ PRINT PROFILES

To keep things simple and flexible, the project includes several ready-to-use print profiles:

All-in-One Plate – BattleSpiner

Quick start. Print and battle.