This video concludes the ink refill design. It highlights the design process of a multiple-pitch spring with a conical transition and a straight end (Ufff! what a complex part, you may think!) It is required to hold and smooth the ball movement during the writing process. I always want to see how the “freestyle blend” tool works, so I didn’t miss this opportunity to use it. It’s really fancy and amazing and it can get you out of a lot of trouble. In the upcoming video, I will start the “click mecanism”. So stay tune and enjoy!!!

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