earlier figured the key to gears not binding would be getting the rotation per tooth to be greater than the angular tooth width so that another tooth would come in contact

wrote a little code, found the derivative of the involute function (tan^2) and by substitution the inverse (1/dinvolute(involute^1(angle))), it looked at first like if i brought my teeth lines down to the base circle that i’d get more rotation than tooth width, but

- i have to figure out how to align gears now with profile shifted teeth (first)

- when the teeth are farther down there is no room for the opposing tooth so i get to draw the spaces between teeth (as well as figuring out how much space is needed) which will make code more general (second)

- separating the teeth means less involute curve to rotate the gear so back to the drawing board a little after that

it looks to me like the gear may indeed work if printed with parts free to move (unsure), but that the lasercut approach does need this fix. the thought is that the fix would make the printed part stronger by giving more contact surface.

0928

1548 aug 8th oklahoma or west

ummm so much changed may be hard to finish

take careful