Modular Tool Holder System for Prusa Core One/+

Modular Tool Holder System for Prusa Core One/+

Module Dimensions

- Base module and tool holders: 20 mm wide

- Spacer module: 10 mm wide

- Magnet slot / lock plate size: 6x2 mm

Key Features

- Fully modular and configurable design

- Tool-free mounting: stays in place without screws or magnets

- Optional locking using screws or magnets

- Side-to-side expandable base modules

- Wide range of tool holders, including universal options

- Optional cosmetic side trims

- Designed specifically for the Prusa Core One/+

The main focus of this system is flexibility . You can build the tool holder exactly to your needs, rearrange it at any time, and expand it as your tool collection grows — all while keeping a clean, stable setup directly on your 3D printer.

Base modules can be connected side-to-side , allowing the tool holder to be expanded horizontally to any width. Onto each base module, you can attach a variety of tool holders designed for different tools, such as pliers, Torx drivers, screwdrivers, brass brushes, wrenches, sockets, and more. Some holders are universal , making them suitable for multiple tools or general-purpose storage.

If screw locking is not used, the tool holder can be repositioned freely, allowing more versatile use—for example, the entire holder can be removed completely or relocated to the opposite side of the 3D printer.

The system is based on a base module that naturally stays in position on the printer frame through its geometry. If desired, the base can be optionally locked in place using screws or magnets , but this is not required.

For visual customization, optional side trim pieces can be added to the ends of the rack for a better appearance.

The system also includes a spacer module , which does not hold any tools. Its purpose is to create additional spacing between tools for better accessibility or layout balance. In addition, a blank tool holder can be mounted onto a standard base module if no tool holder is needed in that position.

Instructions

- Print the base part

- Choose the base part:

- Base_part_20mm OR

- Base_part_20mm_with_mounting_holes

- Both base parts can be placed side by side and locked into each other.

- Folder: Base parts and ends

- Print the tool holder

- Choose the holder you need (e.g. Allen keys, sockets, screwdrivers, brush, etc.).

- Tool holders are universal and fit all original and alternative base parts.

- Folder: Tool holders

- Push the tool holder into the base part

- If removal is needed, the tool holder can be pushed out of the base using the screw hole.

- Optional – add locking components

- If needed, install magnets (Prusa 10×6×2 mm or 20×6×2 mm magnets) or print a base locking plate.

- Folder: Optional

- Optional – Right and Left Base End Pieces

- Decide whether to use the left and right end pieces based on your setup. Make sure to press them firmly against a flat surface.

- There are two sizes of end pieces: one for the 20 mm base and one for the 20 mm base with mounting holes.

- Folder: Optional

- Optional - add screw covers