Radiergummi
Stilform eraser in the shape of a Reuleaux tetrahedron against a gray background
Radiergummi
Stilform eraser in the shape of a Reuleaux tetrahedron against a gray background

Eraser

Stilform Logo bei One HorizonStilform
4.7 3 Reviews

An eraser shaped like a Reuleaux tetrahedron. Each of the four curved edges provides a fine tip that lets you remove individual lines instead of smudging entire areas. Measures 36 x 36 x 26 mm and weighs 10 g.

CHF 4.90

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Voraussichtliche Lieferung am 29, August 2026.
Ordered today · expected delivery on Saturday, 29. August
14 days right of return - fair & uncomplicated
2-year warranty - support from One Horizon

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SKU: OH-STI-00020 Category: Brand:

An eraser that looks like a geometric object—and works better precisely because of that.

Reuleaux tetrahedron

The shape is formed when you arrange four spheres so that each one touches the other three, and then take the intersection of the spheres. The result has four curved edges and four tips. In practice, this means you always have a fine tip at hand that lets you remove a single line without smudging the surrounding drawing. If a tip wears down, simply rotate the body.

What is it for?

  • Remove Individual Construction Lines from Sketches
  • Erase larger areas across the curved edges
  • Fits AEON graphite leads and any standard pencil

With the Eternal tip, it doesn’t erase as thoroughly because metal—rather than graphite—is in contact with the paper.

Technical data

  • Dimensions: 36 x 36 x 26 mm
  • Weight: 10 g
  • Material: high-quality rubber compound
  • Shape: Reuleaux tetrahedron
  • What’s Included: 1x eraser

Care

Protect from direct sunlight and heat sources; otherwise, the rubber compound will harden and crumble. Wipe with a dry cloth as needed.

This item has a 14-day return policy

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Stilform Logo bei One Horizon Stilform
4.7

Based on 3 review

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What is a Reuleaux tetrahedron, and why does the Stilform eraser have this shape?

A Reuleaux tetrahedron is a geometric shape with a constant width at every point. Stilform chose this shape because it fits securely in the hand and allows for precise erasing from any angle—no slipping, no tilting.

Does the Stilform eraser erase cleanly and without leaving streaks?

Yes. The eraser is designed to erase cleanly, and based on users’ experience, it doesn’t leave streaks—even when erasing graphite marks from the AEON pencil.

Is the eraser designed specifically for the AEON pencil?

This eraser is the perfect companion for the AEON pencil and all other graphite pencils. However, it works with any pencil—regardless of the brand.

What material is the Stilform eraser made of?

The eraser is made of rubber and visually reflects the minimalist design aesthetic—a small accessory that complements the rest of the collection perfectly.

About this brand:

Stilform: Writing Instruments for Decades

Stilform is a Hamburg design brand for writing instruments with a magnetic mechanism. Ballpoints, pencils and fountain pens built to last decades, awarded Red Dot and German Design Award.
Learn more
Stilform

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