Gridfinity Pen Lid

This is a custom Gridfinity-compatible lid for Staedtler Triplus Fineliner pens designed to sit atop a 2×3 bin, enabling both pen storage on top (six pens) and storage space underneath. It stems from multiple design iterations, aiming to balance grip, fit, and ease of removal. Over several versions, the lid evolved from a loose fit to a more secure grip with improved thickness for liftability. You can read the full design journey, iteration details, photos, and development notes here:https://hotgun3d.com/gridfinity/pen-lid 🔧 Specifications & FeaturesFits a 2 × 3 Gridfinity binHolds six pens on the top surfaceProvides internal storage region underneathDesigned for a balance of grip vs ease-of-removal