New product development (NPD) plays a significant role in maintaining competitive advantage and increasing market share. NPD is highly dependent on the existing knowledge of individuals within the company, which is shared and used to create new knowledge. Employees' tacit knowledge is another significant source of know-how for companies. Craft knowledge - a form of tacit knowledge that includes material and hand-making knowledge - is transferable to industries through collaborative works. Since the management and design literatures on this subject do not meet on common ground, there is a lack of literature on this transfer. With this aim, we examined the transfer of craft knowledge to NPD in three industries: leather, glass, and furniture industries. Thirteen in-depth interviews were conducted with six companies. Interviews were analyzed through thematic analysis. Craft knowledge is transferred to industries during the idea generation and prototyping stages of NPD through problem-solving and suggesting materials and manufacturing techniques.