LensTile Modular Glasses Case with Custom Tiles

This is a modular 3D-printed glasses case built around replaceable interior and exterior components.

The rigid shell holds two removable TPU inserts that provide a softer contact surface for the glasses. Two decorative tiles attach magnetically to the outside, allowing the appearance of the case to be changed without printing another complete shell.

The case is part of the LensTile modular system. The free LensTile browser app converts your own images into compatible printable tiles, including Smooth, Relief, single-color, and multicolor options.

The design is intended to fit many everyday eyeglasses and sunglasses, but it is not universally compatible. Please compare the confirmed internal dimensions with your glasses before printing.

Live Website: https://antonispsarras.github.io/lenstile/

Github Repository: https://github.com/AntonisPsarras/lenstile

Main Features

• Rigid protective outer shell

• Two removable TPU interior inserts

• Two interchangeable decorative outer tiles

• Magnetic attachment for the inserts and tiles

• Magnetic case closure

• Twenty 8 × 2 mm neodymium magnets in the complete assembly

• Simple hinge using a 105 mm piece of 1.75 mm printer filament

• Compatible with custom tiles generated by LensTile

• Smooth and Relief tile styles

• STL and multicolor 3MF tile export

• No AMS  required for the case or single-color tiles

• Local browser-based image processing

The main modular feature is that the case can be customized repeatedly: create a new tile on the LensTile website, print it, install its magnets, and swap it onto the case.

Modular Interior

The case uses two removable TPU inserts, one in each half of the shell.

The inserts:

• provide a softer contact surface than the rigid shell;

• reduce direct contact between the glasses and rigid printed surfaces;

• can be removed for cleaning or replacement;

• allow different colors or future insert designs;

• attach magnetically to the inside of the case.

The inserts do not guarantee that lenses or frames will remain free from scratches. Before use, inspect all TPU surfaces and remove stringing, blobs, sharp edges, loose material, or debris.

Make sure that magnet faces and dried adhesive do not protrude into the usable space. When uncertain, test the assembled case with an inexpensive pair of glasses first.

Interchangeable Decorative Tiles

The case accepts two removable decorative tiles, one on each outer side. Each tile uses two magnets and can be changed after the case has been assembled.

You can:

• print multiple designs for the same case;

• change the appearance without reprinting the shell;

• combine different tiles on opposite sides;

• print simple single-color tiles;

• use a multicolor workflow where desired;

• generate Smooth or Relief designs through LensTile.

The compatible tile format is approximately:

148 × 53 × 4 mm

Each tile has two magnet locations designed around 8 × 2 mm magnets with printed clearance.

LensTile:

• runs directly in a web browser;

• processes source images locally;

• does not require images to be uploaded to a server;

• converts images into printable tile geometry;

• supports Smooth and Relief tiles;

• exports STL files;

• supports multicolor 3MF export;

• is designed for this compatible modular case system.

The website creates digital tile files. It does not manufacture or ship physical products.

You are responsible for the copyright and licensing of any image you use. Only create and publish tiles from images that you own or have permission to use.

Dimensions and Fit

Approximate usable internal glasses space

155 × 60 × 36 mm

Overall exterior dimensions

174 × 85 × 60 mm

These dimensions have been checked, but printed results and the exact usable shape may still be influenced by the model geometry and your printer’s output.

Measure your glasses before printing, particularly when they have:

• oversized frames;

• strongly curved lenses;

• wraparound shapes;

• thick temples;

• unusually wide hinges or decorative elements.

The stated space is a dimensional guide, not a universal compatibility guarantee.

Required Hardware

The complete case uses:

• 20 × neodymium disc magnets, 8 × 2 mm

• 1 × 105 mm length of standard 1.75 mm printer filament

• A small amount of super glue

No additional hinge hardware is required.

Magnet allocation

Removable TPU interior system: 8 magnets

• 2 magnets in each TPU insert: 4 total

• 4 corresponding magnets in the case

Decorative tile system: 8 magnets

• 2 magnets in each decorative tile: 4 total

• 2 corresponding magnets on each outer side of the case: 4 total

Magnetic closure: 4 magnets

• 2 closure magnets per side

Grand total: 20 magnets

All magnet positions are designed for 8 × 2 mm magnets, and the intended magnet clearance has been checked.