55/35 special gear set for pi approximation on Harrison lathe
thingiverse
A special remix of single gears to produce a 55 tooth and 35 tooth gear pair to enable pi to be approximated on a Harrison L5 lathe. This is useful for turning threads to suit worm gears. 55/35 is a pretty good approximation for pi/2. If you need to tweak bore and keyway dimensions, you could use the customizer version this was derived from and print as two separate gears. Or you could download the SCAD files and make changes manually in OpenSCAD. I haven't made one of these yet but it is on my to-do list. If you make one please comment on your experience.
With this file you will be able to print 55/35 special gear set for pi approximation on Harrison lathe with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on 55/35 special gear set for pi approximation on Harrison lathe.