We are looking at an Energy Education grant and part of an idea might be those hand crank generators.
We have some DC motors lying around doing nothing, so I wanted to turn one into this. So I used tinkercad to design a wheel that could connect to the motor spindle. The spindle is 2 mm and the dowel is 6 mm.
The joy of #3Dprinting is that holes dont necessarily come out the same size.
In version 1 they were too small.
For version 2 I designed them to be 3 mm and 7 mm…which ended up too big.
Also in version 2 I decided to have a cylinder for the dowel to sit in.
Version 3 I went with 2.5 mm and 6.5 mm
The spindle hole was still too small but the dowel rod fit fine
I decided to measure the size of the wheel (gear). It is 39.5 mm but the design is 40 mm.
I printed these on an Ultimaker 2+
We have a Lulzbot TAZ , so i printed v3 on it..the holes are too big
Anyone have a good solution???
#MakerSpace #STEM
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