Ski vise that can be mounted onto a workbench using clamps.

The ski or board can be place onto top to wax the bottom. To get more grip a rubber can be sticked on top of the print.

The ski can be clamped in the 90 degree position using the screw that is included in the model. On the end of the screw there is a ball joint with a counter part to adapt to the ski. The ski or board can also be place into the 60 degree position to get to the edge more easily while sharpening the edge.

To create more surface to clamp onto, there is a tab that extends the clamping area, there is a right and left version. 

The center version doesn't has this tab.