The The Gridfinity Grimoire - HP Tracker is a compact, tactile tracking tool designed to fit the 4×5 Gridfinity interior of The Gridfinity Grimoire.
This module provides fast, at‑a‑glance management of key combat resources such as HP, Temporary HP, Hit Dice, and two custom ability trackers for class‑specific features like Rage, Bardic Inspiration, Ki Points, Sorcery Points, and more.

Built on a 3×1 Gridfinity footprint and assembled with a snap‑fit system, this tracker is smooth, sturdy, and highly satisfying to use at the table.

✨ Features

🧮 Five Independent Tactile Wheels

Each wheel has a raised, tactile feel and rotates with clear steps:

• HP Wheel – Track current hit points
• Temp HP Wheel – Quick reference for temporary hit points
• Hit Dice Wheel – Ideal for long‑rest tracking
• Ability 1 – Class resource tracking (e.g., Rage, Ki, Sorcery Points)
• Ability 2 – Secondary class tracker (e.g., Bardic Inspiration, Wild Shape, Channel Divinity)

📦 Gridfinity Compatible

• Occupies a 3×1 Gridfinity base space
• Fits perfectly inside The Gridfinity Grimoire or any standard Gridfinity setup
• Designed for thin‑base standard (42×42 mm) Gridfinity platform

🧩 Snap‑Fit Assembly

• No glue needed
• All parts are designed to fit together cleanly and securely
• Wheels spin smoothly yet stay in place thanks to the internal locking geometry

🔄 Tactile Wheel Mechanism (Remix Credit)

The wheel design is a remix of the fantastic wheel system created by “about30cows”:
“Ultimate DND Players Kit – Blank Wheels and Spares”

⚠️ Important Slicer Requirement — Arachne Needed

To preserve the inner wall locking features of the rotating wheels, your slicer must use Arachne wall generation.

If Arachne is NOT used, the slicer will ignore the internal thin‑wall geometry, causing locking tabs to disappear and the wheel to be useless.

Recommended Slicers / Profiles

• PrusaSlicer with Arachne enabled
• Cura (Arachne by default)
• Bambu Studio (Arachne engine built‑in)