worm gear 40:1 reduction ratio

These are parts used in a project to make a tracking solar panel. It is best to print the (big) gear in PLA and the worm (smaller) gear in ABS for better wear life. I found i could not print the small gear in one part so i have included it as two halves that i glue together ( hence the ABS).

It has to be printed in high resolution as it is a proper gear design. I use nema 23 as the driving motor