In light of the recent drop test debacle, we’ve decided on a new infill pattern for the wheel hub. The infill that we used for the drop test was a small square pattern that stays unchanged throughout the print. Evidently, this wasn’t strong enough to handle the stress of the weight of the robot and the impact during the test.
![](https://www.sfxrescue.com/wp-content/uploads/2018/10/wheel.png)
We’ve now printed new hubs with a concentric infill pattern. This makes the print much stronger, and should withstand the next drop test!
![](https://www.sfxrescue.com/wp-content/uploads/2018/10/20181024_170023.jpg)
How did the new infill work out? Have you done another drop test?