This magnetic pen is a “magnetic mounting wizard” for 3D printing enthusiasts. Featuring a scale groove + indicator needle design, it provides precise real‑time readings of remaining magnet stock, giving you complete control over material consumption at a glance. Its professional magnetic distribution mechanism streamlines the insertion process for magnets within 3D printed parts—speeding up installation while ensuring proper alignment and secure placement. Whether you’re working with 5mm or 6mm magnets, this tool ensures accurate positioning every time, making it an ideal solution for 3D printing projects that require precise magnet placement—and transforming what was once a tedious task into a fast, reliable, and highly accurate workflow.

Installation Notes:

After inserting the main body into the tail knob, be sure to check whether the hexagonal hole has been fully penetrated; if it has, you can proceed with the subsequent limiting installation.

The limiting pin can be made from filament waste; after threading it through, simply use a small knife or pliers to trim off any excess material.

The first magnet must be secured in place using adhesive.

When installing the sliding rod, make sure to align the holes with the scale grooves before proceeding with assembly.

Once the sliding rod’s knob is flush with the top end, you can install the scale indicator clip—this marks the zero‑point on the scale.