I didn’t actually do anything with the sponge. Sorry about that.
I CADded up the chassis for my silly combat robot.
![](https://somethingnew.ca/wp-content/uploads/2024/03/image-89.png)
It will be 4WD with 4 N20 motors and 1/2″ x 2.25″ foam wheels. The chassis and the wheel hubs will be 3D printed.
![](https://somethingnew.ca/wp-content/uploads/2024/03/image-90.png)
So, after printing the chassis and wheel hubs I decided to weigh all the parts.
![](https://somethingnew.ca/wp-content/uploads/2024/03/image-91.png)
This is sort of a problem, but really the opposite from the usual problem. I’m building this for the 1lb class. It’s WAY underweight.
Maybe I’ll add 250g of magnets.
![](https://somethingnew.ca/wp-content/uploads/2024/03/image-92.png)
Without the “body”, this thing could almost be a fairyweight.
![](https://somethingnew.ca/wp-content/uploads/2024/03/image-93.png)
![](https://somethingnew.ca/wp-content/uploads/2024/03/image-94.png)
It actually works!
![](https://somethingnew.ca/wp-content/uploads/2024/03/image-95.png)
This cat didn’t even hate it. I chased her and let her chase it up and down the hallway until she got tired.
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