Skilled Craftsman Teppei Hayashi continues his exploration in the art of cutting tools, as outlined in the second section.

In the heart of the automotive industry's transformational period, Teppei Hayashi, Group Leader of Powertrain Manufacturing Fundamental Engineering Div. at Toyota Motor Corporation, is making a significant impact. Hayashi aims to develop a consulting business, leveraging his expertise in shaping and sharpening both inside and outside the company.

At Toyota, Hayashi's work revolves around maintaining, managing, improving, and developing cutting tools used in car manufacturing, particularly in powertrain production. His innovative approach to drill's cutting edge has been admired for its beauty, revealing surprising elegance on the edge or surface of each cutting tool.

One of the methods Hayashi demonstrated is center-point grinding, a technique that shapes drill bit tips to reduce burr waste formation. This meticulous process is a crucial part of Toyota's monozukuri, the craft of maintaining and restoring cutting tools.

The Honsha Plant tool-maintenance center, the only one among all seven that has facilities for learning how to use manual machine cutting tools, is where Hayashi's work unfolds. Here, senior employees emphasise the importance of all five senses in maintaining machining equipment and cutting tools.

Members at the Honsha Plant can learn basic principles, uses of different cutting tools, hand-creation of cutting edges, and maintenance methods. They also have access to a measuring device to check the precise dimensions of sharpened edges and a grinder that projects a magnified view of cutting tool tips during sharpening and grinding.

As cars continue toward electrification, there will be diverse needs for processing novel materials and shapes. This presents a challenge for Hayashi and other members, who are developing novel cutting tools for use in prototyping.

Hayashi's vision extends beyond Toyota. He wants to turn his group's know-how to new fields, both within and outside the company, to contribute to better and more appealing monozukuri. Despite the shift towards automated NC and CNC machining, it is still essential to have people with skills and senses who can use and maintain old manual machines if there ever comes a time when the automated equipment breaks down.

The search results do not provide the name of the person responsible for developing novel cutting tools for prototype development within Toyota. However, with Hayashi's dedication and innovative spirit, it is clear that the future of manufacturing at Toyota is in good hands.