Paige Green

Leg warmers designed by Allison Reilly and yarns by Mary Pettis-Sarley

This weekend, craft lovers in the Bay Area will have ample opportunity to celebrate the handmade.

The Renegade Craft Fair will be hosting its fourth annual sale in Fort Mason, and the Oakland Fiber and Textile Festival is gathering for its second year at Oakland Splash Pad Park. Hundreds of vendors will display their goods amid interactive demonstrations of recycled rubber toys and heritage quilting techniques.

But a growing number of Bay Area consumers and designers are interested in more than the hand-crafted — they want to understand the sourcing.

At the fiber festival, for instance, Bente Petersen, the event’s founder and owner of the Piedmont Yarn and Apparel shop, has invited local alpaca and sheep raisers to educate audiences on the possibilities of locally produced threads and yarn.

“They are bringing in their freshly shorn animals, to show the whole process,” Petersen said. “It’s like when children are asking, ‘Where does the milk come from?’ If you haven’t seen a cow, you wouldn’t know.”

The outlines of this new ethos are still taking shape. Enthusiasts of locally sourced goods are championing things like the use of recycled materials and the opening of local factories.

In September, Rebecca Burgess, an author, will be completing her Fibershed Project: one year of wearing only clothing that was created locally. That means that every piece — from the raw wool, bought from Northern California farmers, to the colors of the garments — came from within a radius of 150 miles from her West Marin residence.

SFMade is a new nonprofit organization formed to help promote businesses that are making things locally and to provide tools to do more manufacturing in San Francisco. In just one year, 180 businesses have become members.

During a week of SFMade events in late May, a tour of San Francisco factories drew more than 500 people, a level of interest that “stunned” Janet Lees, the nonprofit’s director of programs and communication.