AR view

Marble Braille cell

Learn the Braille alphabet by setting marbles in the six dot positions

Every Braille letter is a pattern of raised dots in a cell two dots wide and three high. This is that cell made big enough for small hands: place a marble in each bay that should be raised and feel the letter. A is dot 1, B is dots 1 and 2, C is dots 1 and 4. The dot numbers are engraved in the floors, so sighted children, parents and teachers can learn alongside blind and partially sighted friends, and play guess-the-letter with their eyes closed.

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Size: 75 × 110 × 22 mm
Shape: Rectangular
Walls: 2.4 mm
Volume: 31.9 cm³
Est. weight (PLA): 39.5 g
Parts to print: 1
Category: Accessibility & daily living
Made by: Krypto
Built in: 66 steps

What’s in it

Rectangular, 75 × 110 × 22 mm, with 2.4 mm walls
3 dividers
Engraved and raised text: “1”, “2”, “3”, “4”, “5”, “6”, “BRAILLE”

How to print it

Use 16-25 mm marbles or wooden beads. The dot numbers are engraved in the floor of each bay.

Prints as shown on its floor, no supports.

Filament: at most about 39.5 g of PLA printed solid (roughly $0.79 at $20 per kg); normal infill uses less.

To get the files, open it in the generator and choose File › Download STL (one file per part) or Download 3MF (every part on one plate).

Questions

What size is the marble Braille cell model?

The marble Braille cell model measures 75 × 110 × 22 mm (width × depth × height). You can change every size in the free SO3D.xyz generator before you download it.

Does it need supports?

No. Use 16-25 mm marbles or wooden beads. The dot numbers are engraved in the floor of each bay. Prints as shown on its floor, no supports.

How much filament does it use?

At most about 39.5 g of PLA (31.9 cm³ printed solid), roughly $0.79 of filament at $20 per kg. Normal infill uses less.

Can I change it?

Yes. Open it in the SO3D.xyz generator (free, in your browser), change the size, walls, dividers, holes, text or anything else, then download it as STL or 3MF for your slicer.

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Make it fit your space

Change the size, walls, dividers, holes and labels of the marble Braille cell model in your browser, then download it for your printer. Free, no CAD needed.

Customize this model