A friend told me, that he have problems with his garden bench. If the ground wet, the small legs sinks into the ground and if the ground dry, the garden bench wobble ... So here is my solution, I designed big garden bench foots with internal springs to compensate the uneven ground ...

Step 1: Design and Print ...

I used Fusion 360 to design one foot. The upper and the lower part have the same holes to fix the springs. I designed 3 Parts to print this foots without a lot of support structure.

I bought a set of springs and I used a scale to measure how much weigth(5kg) is necessary to press one spring a little bit together. Then I calculated: 2 people ( 2 x 80 kg ) / power of spring (5 kg) / count of foots(4) = 8 springs per foot ...

I printed the parts with 50% infill, 2 mm wall thickness and 4 mm of the ground layer to get very strong parts ...