The Spool

How Much Does It Cost to Make Spider Silk Without Spiders?

If you’re a regular reader of The Spool you already know that we’re not the first group to harness the power of spider silk, either from spiders themselves or by developing technology.

The many approaches used over time have various advantages and disadvantages, including cost of manufacture. In fact, one of the questions we get asked most often is: How much will your silk sell for?


The Interwoven Paths of Tech and Textiles – Part 2

The previous post of The Spool dove into the history of technology in textiles from the Stone Age through the Industrial Revolution. But the love story between tech and textiles didn’t end there.


The Interwoven Paths of Tech and Textiles – Part 1

Bolt Threads lives at the intersection of the two seemingly disparate worlds: fashion and biotechnology. We realize that technology and textiles aren’t so different after all: in fact, they have a long history of intertwining. (For an excellent longread, check out Virginia Postrel’s essay “How Textiles Repeatedly Revolutionized Human Technology”) (more…)

Why We’re Having a Great Wednesday

Today our CEO Dan spoke on a panel about the future of fashion at TechCrunch Disrupt, where he shared our vision for a future of better, more sustainably-made textiles. The textile industry is responsible for monumentally high levels of pollution and waste; in designing new materials, we’re taking advantage of a rare opportunity to design manufacturing processes as sustainably as possible. (more…)

Why Making Spider Silk Is So Tricky: The Sequel

Over the past few decades, a number of groups have tried to make spider silk via modern biotechnology techniques, but spider silk textile products still aren’t available for sale. Why not, and what are we doing differently? (more…)

Why Making Spider Silk Is So Tricky

Why has the dream of making tons of spider silk been so elusive, and how are we finally turning that dream into a reality? (more…)

The History Of Silk

Welcome to the first post of The Spool, the Bolt Threads blog. The Spool is your front row seat on our journey from idea to commercial product. You’ll get insight into our goals, challenges, and what’s on our mind. Join us in unraveling the mystery of developing new materials and making a new technology a reality!


We’re replicating natural silk production, but this isn’t the first time there’s been a global hunt for the secrets of silk.



Bolt Threads
5858 Horton St, Suite 400
Emeryville, CA 94608

(415) 325-5912
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