This is an easy to print boot jack.

The thickness of the important parts is 4 mm. Make sure you print enough wall/top/bottom layers to make it solid. When I say solid. I just put 20 top layersand 50 walls... The design is hollow, meaning it's not that bad to print. With this kind of model it's quite easy to get corners raising from the bed; just add a brim if that is the case and it usually works.

On my K1 it took a little above an hour to print.