User Feedback Yields a Useful Study Object Made of Brass

Reading a book is very different from studying a textbook. With the former, you flip through pages at whatever pace you read. With the latter, you leave the textbook open to a particular page while you take notes, transcribe, or re-read text in order for it to sink in.

For this latter situation, Japanese stationery company Kokuyo detected a problem. In 2022, the company sought feedback from junior high and high school students on what their study-time paint points were. The students noted that holding a textbook open with one hand while trying to write with the other was a hassle. Some used spring-loaded clips made for the purpose, but these made turning the pages a hassle.

Others compensated by using a bunchin, a traditional calligraphy scroll weight that's essentially a piece of bar stock, square in cross section. But the flat bunchin didn't hold the books open well, as the flat shape only contacted the curved surface of the open pages in two places.

Kokuyo then devised this object, made out of brass. The designers arrived at the precise curvature after measuring several dozen representative books.

Hedging their bets, the company only produced a small batch of 300 units. They sold out immediately.

Concept proven, Kokuyo then put the objects—called "book-hugging paperweights"—into production in early 2024. The brass units hit the market first, followed by lower-cost steel versions in black and grey. The same year they won a stationery award.

Demand emerged for an even larger model, for thicker art books and coffee table books, and that model hit the market last month.

It's fair to say Kokuyo wouldn't have thought of this product without that crucial feedback-seeking initiative.