No-Tools Micro Gear Motor Mount

This is a handy little mounting plate for those 12mm micro gear motors that are popping up everywhere. These little DC motors can be used in a lot of places where you would normally use a servo or continuous rotation servo motor, especially for robotics applications.

As an added bonus, I included some shaft adapters with a variety of shapes. I will post the shaft adapters as customizable parts in a separate post.

If you don't already have some of these motors, my favorite version is the Pololu Micro Gear Motors (https://www.pololu.com/category/60/micro-metal-gearmotors), which come with carbon brushes and a range of gear ratio options from 5:1 up to 1000:1.
The ones I have personally used with this mount are:

6V, 75:1 - https://www.amazon.com/gp/product/B00EIAZ4UY/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00EIAZ4UY&linkCode=as2&tag=tac047-20&linkId=DURFWFVG2W6BUF2N
6V, 100:1 - https://www.amazon.com/gp/product/B00EIAZ4UY/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00EIAZ4UY&linkCode=as2&tag=tac047-20&linkId=DURFWFVG2W6BUF2N
6V, 298:1 - https://www.amazon.com/gp/product/B00EIAZ4UY/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00EIAZ4UY&linkCode=as2&tag=tac047-20&linkId=DURFWFVG2W6BUF2N
6V 1000:1- https://www.amazon.com/gp/product/B00EIAZ4UY/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00EIAZ4UY&linkCode=as2&tag=tac047-20&linkId=DURFWFVG2W6BUF2N
Please note that the 1000:1 motor has a slightly longer gear box. The SCAD file alows you to adjust that, but if you only download the STL, it won't fit with the 1000:1

...OR... if you don't want to spend $15-$20 per motor, here are a few other manufacturers making similar motors at a lower cost:

6V, 300RPM: https://www.amazon.com/gp/product/B00EIAZ4UY/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00EIAZ4UY&linkCode=as2&tag=tac047-20&linkId=DURFWFVG2W6BUF2N
12V, 100RPM: https://www.amazon.com/gp/product/B00EIAZ4UY/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00EIAZ4UY&linkCode=as2&tag=tac047-20&linkId=DURFWFVG2W6BUF2N
6V, 30RPM: https://www.amazon.com/gp/product/B00EIAZ4UY/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00EIAZ4UY&linkCode=as2&tag=tac047-20&linkId=DURFWFVG2W6BUF2N