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

Eraser

Name: Eraser
Brand: Stilform
SKU: OH-STI-00020
Price: 4.90 CHF
Availability: InStock
Rating: 4.67 (0 reviews)

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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Ordered today · expected delivery on Friday, 18. September

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2-year warranty - support from One Horizon

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SKU: OH-STI-00020 Category: Stationery Brand: Stilform

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 30-day return period

Discover the entire product line:

Brand	Stilform
Material	Rubber
Weight	0.01 kg
Color	White
Scope of delivery	1 eraser
EAN	4260527470755
Product size (L×W×H cm)	2.6 x 3.6 x 3.6 cm
Product weight	0.01 kg

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.

AEON graphite tip – pack of 3

Three graphite replacement leads for the AEON pencil, available in either HB or 2B. They provide the classic pencil feel with shading and smooth transitions. Compatible with the AEON Pencil, AEON Nano, and AEON Pure.

CHF 9.90

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Ready to ship

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Ruler

Aluminum ruler with a scale from 0 to 15 cm. 160 x 20 x 2.5 mm and 24 g—flat and light enough to fit in a notebook or jacket pocket. The sharp edge keeps the pen from smudging, preventing ink from bleeding underneath.

CHF 14.95

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Partly in stock

Stilform Mine Gel Pen, Close-up 1 | One Horizon

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Refill gel pen

The Japanese Pilot LP3RF Juice Up gel refill for the ARC gel pen. Permanent and smudge-proof, available in black, blue, or red, and in line widths of 0.3, 0.4, and 0.5 mm. Also fits other pens in the G2 system.

CHF 4.90

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FLOW Rollerball Pen, Titanium

The FLOW in titanium: 40 g, corrosion-resistant, and harder than aluminum. The Schmidt P8127 refill ensures a consistent ink flow without skipping when you start writing. 137 mm, magnetic cap. Available in matte titanium or titanium DLC.

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INK Titanium Fountain Pen

The INK in titanium: 82 g, corrosion-resistant, available in matte titanium or DLC. The nib by Peter Bock is available in stainless steel, black steel, titanium, or 14-karat gold, each in four widths. 152 mm long; converter included.

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