蘇佑平
https://www.blitter.com/~russtopia/GearGen/geargenerator.com/index.html#100,100,100,10,1,1,22517.999999992135,2,1,5,1,5,35,-90,0,0,20,4,5,35,-45,0,0,2,57
https://woodgears.ca/gear_cutting/template.html
https://bit.ly/3DhRcxE
