Here are a few WPL 5mm hex wheel designs that I came up with. I haven't had a chance to print them myself so there may be some bug or flaws that will need adressing. These are my first real attempt at 3d design so any suggestions, comments and or tips from the experienced would be greatly appreciated.
Edit. 03/07/18 3:22 am added better hexes and material to eliminate weak spots.
Edit: 03/07/18 7:30 pm Increased the width of the lips, added supports for the hex, increased overall diameter and enlarged mounting screw hole
Edit: 3/18/19 Added more material to id to eliminate potential weak areas, added a more detailed version of the Actros style wheel and beefier lugs to the soft 8 style wheel.
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/67IWoWg5BIC