Herringbone gear rack and pinion
Description
This Is A Herringbone (A Version Of The Double Helical) Gear Rack And Pinion, Remixed From A Single Helical Rack And Pinion By Janssen86. The Doubling Up Of The Helical Teeth Removes The Axial Thrust Of A Single Helical Gear And Also Helps Keep The Gear Centered. I Printed A Test Print Prior To Using This As A Component Of A Bigger Project, But Found That Both I And My Kids Also Enjoyed This As A Fidget Toy! There Is Something Quite Satisfying About How Nicely The Pinion Stays On Track On The Gear. No Supports Needed. I Printed At 0.20Mm Resolution With A 0.40Mm Nozzle. Note That In The Current Version (Not The One I Printed) The Pinion Prints Upside-Down Relative To The Rack. This Is Deliberate, As The Bottom Side Gets Squashed A Little, And This Should Symmetrize The Squashing. The Squashing Made My Test Print Not Align So Nicely. I Should Do Another Test Print At Some Point.
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