⚠️ WARNING! I strongly DON'T recommend using this pen for cheating on an exam! This is designed as a daily productivity tool.

🔥 Version 2.0 is out! Check out the new upgraded version with a unified body, improved ergonomics, and a diamond pattern grip here: [https://makerworld.com/en/models/2974797-hidden-note-pen_2-0#profileId-3336806](https://makerworld.com/en/models/2974797-hidden-note-pen_2-0#profileId-3336806) 🚀

🛑 The Problem

You’re deep into your workflow or studying, and it happens again—for the fifth time today, you’ve forgotten that specific formula, shortcut, or document structure. You try writing it down on a random sticky note, but somehow, it always vanishes into thin air right when you need it most. Loose papers get lost, and switching screens to look it up disrupts your focus.

🚀 The Solution: Hidden Note Pen!

Say goodbye to the daily hustle. This pen is here to keep your most critical data, schedules, or quick reminders literally in the palm of your hand. Whether you need a reference guide for complex parameters or just a handy daily note-keeper, this sleek 3D-printed pen is your new go-to desktop companion.

⚙️ How It Works & Features

1. 🔄 Sliding Mechanism: A smooth mechanical twist reveals your hidden note in seconds.

   1. Print Profile Note: If your printer is perfectly tuned, use the "Unified One-Piece Body" profile. If your printer struggles with tight tolerances, use the "Split Components" profile to print the mechanism pieces separately for an easy assembly!

       

      (Split components assembly)

       

2. 🌀 Anti-Wrap Cylinder: Keeps the paper rounded so it slides smoothly without jamming or tearing.
   1. 📐 Paper Dimensions: Optimized for a paper strip of 2.4 cm x 10.5 cm (0.94" x 4.13"), with a maximum writing space of 1.8 cm x 10.5 cm (0.71" x 4.13"), as shown in the dimensions blueprint image. The unwritten blank border is designed to sit perfectly inside the slot mechanism, preventing any sharp paper edges from catching and keeping the sliding action smooth as butter! 🔄✨
      1. 🔧 Tip: Don't want to measure? Just print the included cutting template to quickly mark and cut your paper! 🛠️ (Note: Due to pen/pencil tolerance, it might be slightly less precise than doing it manually).

      2. 🩹 Bonus Tip: I recommend placing some clear tape over the paper to secure it even better!

          

          

          

3. 🔩 Screw-On Bottom Cap: The bottom of the pen features a secure threaded cap, making it incredibly easy to unscrew and swap out your notes whenever your tasks change.
4. 🧢 Customizable Lid: Includes a fully 3D-printable lid to match the clean aesthetic of the pen.