Here is a remixed version of achmed20's Skateboard backpack hook. I originally printed it to use with my skateboard and longboard but I found out that the original was better suited for longboards only.
This model had the middle sliced out and two sides pressed in. It should now hold a skateboard nicely.
I printed mine with 20% infill and supports, then secured it with zip-ties.
This will NOT fit a longboard or penny board.
If you have a longboard I recommend using achmed20's Skateboard backpack hook.
The author remixed this model.