Re-design of the caster ball wheel re-design

The even newer ball caster wheel

Yes, this is another ball caster wheel and yes also, it does look exactly the same as it did last time. However, it is actually ever so slightly different from the previous version (v0.3)

The main differences are that this has fewer ridges to help reduce surface area in contact with the ping-pong ball, therefore increasing the fluency of it's rolling. Also, the ridges are now deeper and more prominent, this is in order to to make them look more purposeful; the bumps on the previous version looked like they were were accidental, thus making it look like the part was poorly designed.

To help reduce the chance of it snapping, I have reverted back to the slots being deeper and therefore the design has more structural strength throughout. On the other hand, this would cause the robot chassis to be uneven again, as it would be sloped backwards. Unfortunately, it still snaps, even though it has a thicker structure at the bottom supporting the ball; I think the cause of the weakness now is the slot which turns in the centre of the platform, as this may be causing unnecessary strain on the design.

It still holds the ping-pong ball nicely

The design files for this version of the ball caster wheel (v0.4) can be downloaded from Dropbox, along with the previous versions of the ball caster wheel.