I modified the original model to make it compatible with the washer (27 mm) from my crutch.
I paused the print at layer 93 to insert the washer.
I used TPU with 20% infill and a 3D honeycomb pattern — other infill patterns will probably work as well.
The author remixed this model.
I modified the original model to make it compatible with the washer (27 mm) from my crutch.