THE BRUSH BLOG

Stories, gear & friction.

Field notes, build logs, and everything we learn making climbing tools.

A climber brushing at sunset with the most innovative climbing brush of 2026. This is the perfect gift for the boulder who got everything.

2026 Best Gifts for Climbers: 10 Things They'll Actually Use!

Buying for a climber is either easy or completely baffling. This list cuts through it — 10 gifts that actua...

Apr 24, 2026
Adam Ondra sitting in front a cordless fan during his bouldering session for Emotional Landscape 8C/V15, Photo byMartin Švec

Have Portable Fans for Bouldering Become Mainstream?

Adam Ondra just completed the most dominant bouldering run in recorded history — V17 and four 8C flashes in...

Apr 21, 2026
Should we ban electric climbing brush at competition?

I Was Banned From Using My Own Invention at a Competition

I invented a handheld electric climbing brush and brought it to the Danish Boulder Cup. An official told me...

Mar 08, 2026
Photo by Wolf Lieff. Super caked climbing hold. Lets make sure to brush after climbing.

Your Hands Are Dirtier Than You Think. The Unwritten Rules of Crag Etiquette.

Everyone brushes before they climb. Almost nobody thinks about what their bare hands do to a hold first. Se...

Mar 05, 2026
A complete tear down of the ChalkBlaster showcasing each parts

We Tried to Destroy our Own Product

We packed the motor with chalk, submerged it, blocked the airflow, and forced it to overheat. If it was goi...

Mar 05, 2026
Two black ChalkBlaster prototype designs labelled A and B, shown next to a smartphone for scale on grey carpet.

We Built It Wrong 7 Times

Seven major redesigns, six months, and more broken prototypes than we'd like to admit — all bootstrapped fr...

Mar 05, 2026
Illustration of six climbing brushes — a folding brush, wooden and neon handles, a long-reach brush, a wide brush, and the black electric ChalkBlaster jet-fan brush.

What Is the Most Innovative and Best Climbing Brush of 2026?

Every climbing brush worth knowing in 2026, ranked honestly — Sublime, Pamo, Black Diamond, Lapis, Soop and...

Jan 01, 2026
Every clap of chalk sends a cloud into the air you're about to breathe. Photo: Sweep Climbing

Air Quality in Climbing Gyms: Chalk, Rubber and Smarter Brushing

Indoor climbing air isn't just chalk — new research finds rubber particles from shoes in it too. Here's how...

Aug 26, 2025
Two ChalkBlaster brush heads side by side — natural tan boar-hair bristles on the left, grey synthetic nylon bristles on the right.

Boar vs. Nylon Bristles: Which Climbing Brush Should You Use?

Boar-hair vs. plastic (nylon) bristles compared: grip, rock safety, indoor use, durability, and when to cho...

Aug 26, 2025

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