Mechanical SpiroMètre

Design InspirationI designed and made an electronic spirometer with my grandfather while I was in high school. For fun and to challenge my self, I tried to remake it, but using only gears and rod-cranks. PS. Sorry for broken English. Printing indicationsNozzle 0.40.15mm at 50mm/s for most parts.All the parts were printed with PLA or PLA+ except for the tourbillon which works better in PETG. It’s also important that all the parts are cleaned of stringing and printing artifacts.CaseThe ‘’whistle’’ part of the case should be printed flat on the bed with the filament of your choice. The main case should be printed vertically with the smallest section on the bed. You may need to force supports only under the first bearing casing. The holes on top of the case for the sliders may need some rounding with a knife. GearsAll of the gears were printed flat on the bed with PLA+. If you’re having trouble with the Big one, try printing it at 99% scale. If you do so, don’t forget to scale the crank-ro