Toyama Hamono R3 Rust Eraser for Pruning Shears

A soft, lightly abrasive block that lifts plant sap, dirt and rust from shears and scissors.

Sap and grime build up on blades and slow every cut, and carbon steel left damp will spot with rust. Toyama Hamono’s R3 eraser is a soft, rubber-like block with a light abrasive that removes plant sap, dirt and rust from shears and scissors. Its thin profile slips into narrow gaps around the blades.

Specifications

• Brand: Toyama Hamono (Sanjo, Niigata, Japan; founded 1861)
• Model: R3 Rust Eraser
• Type: Tool cleaning block (rust eraser)
• Material: Soft, rubber-like, lightly abrasive block
• Removes: Plant sap, dirt and rust from shears and scissors
• Profile: Thin, to reach narrow gaps
• Made in: Japan
• Item number (MPN): R3

Features

• Removes plant sap, dirt and rust
• Soft, rubber-like block with a light abrasive
• Thin enough to reach narrow gaps
• Made for shears and scissors
• Made in Japan by Toyama Hamono

Best for

A quick clean after pruning sappy plants such as roses, conifers and fruit trees, and removing light rust from carbon-steel shears. Compare with the Toyama Hamono R2 Slim Shear Sharpening Stone, #320.

Who this is not for

• Sharpening: the eraser cleans; use the R2 whetstone to restore an edge.
• Deep pitting or heavy corrosion on old tools.

Why we carry it

We’ve been curating design-led pieces since 2009, and we look for tools that earn a place in the house as well as the garden. Toyama Hamono was founded in 1861 in Sanjo, Niigata, a city with a long tradition of metalworking, and still forges its shears by the traditional tanzo method. Its work has been recognized with the Good Design Award and as Sustainable Garden Product of the Show at the 2023 Melbourne International Flower & Garden Show.

Buy once: durability and care

Keep it dry and store it indoors with your tools. Rinse off grit and let it dry before putting it away.

Frequently asked questions

What does the R3 rust eraser remove?

Plant sap, dirt and rust from shears and scissors. It is a soft, rubber-like block with a light abrasive.

Will the R3 rust eraser scratch my blades?

It is only lightly abrasive and made for maintaining Toyama Hamono’s own shears. Rub gently along the blade and wipe clean.

Can the R3 rust eraser reach between the blades?

Yes. Its thin profile lets it reach narrow gaps.

Does the R3 rust eraser sharpen as well?

No. It cleans; for sharpening, use the R2 sharpening stone.

Where is the R3 rust eraser made?

In Japan, by Toyama Hamono of Sanjo, Niigata.

Trade pricing for design professionals

Interior and garden designers, architects, contractors and builders can apply to the MetropolitanDecor Trade Program for trade pricing on Toyama Hamono and the rest of our catalog, a dedicated trade support line, and free catalogs and finish swatches. Applying takes about three minutes; our trade team reviews every application personally, usually within one business day. Buying several pairs for a landscaping crew, a florist studio or client gifts? Contact us with models and quantities and we’ll confirm availability and lead time.

Shipping & returns

Ships in 2–3 business days. Orders over $100 ship free by ground to the 48 contiguous states. All sales are final, so check the size and specifications above before ordering; if your order arrives damaged or isn’t what you ordered, contact us within 48 hours of delivery with photos and we’ll make it right.

Please note: Because this item is made to order or specially sourced, it is final sale.