I reworked this Ladge. It's a bit smoother and got holes for M3-screws.
I have printed it with 80% infill with 0.1 on a Anet A8 with PLA. It also works with 20% infill, but then it's kinda squishy.
2017-08-17: Version 3 - all parts in single files. I have improved part1.