Mk1 yoyos has moved: https://mk1yoyos.com/
Hi! My name is Mark Diehr and I really like yo-yos.
This project came about after I started yoyoing again in early 2018, first with a YYF F.A.S.T. 201, and later with an increasingly large collection of interesting metal and plastic yoyos designed by folks all around the world.
Later, I got connected to Jordan from Smashing Yoyo Company, who helped me to get started designing my own yo-yo from scratch. With his help and with Zach Lerner's excellent yo-yo design series on Youtube.
In following months I practiced designing all sorts of yoyos, got a bunch of feedback, and settled on what would end up being my first released yoyo, the Diffraction.