This is a heavy one, because when I crash I just want to wonder if I will need to tighten the prop nuts.

The cf is my own design cut by cncmadness.

The sainsmart violet TPU is 2mm thick, 100% solid infill, printed on an Ender3.

I can hit the pod all day with a hammer and not damage the tpu, I can't remember the last time I broke a flight camera, this may be overkill.

True X base plate is 6mm and the arms are 6x12mm, all bolts are 12.9 steel.

I coat the electronics with three layers of MG422B conformal coating, because british weather.

I find the motor wire heatshrink is great for protecting the wires from scraggle, also the arm zip ties are in the exact right spot to bounce typical prop strikes.

Weak point of the design is the arm bolt, when an arm bolt breaks - the arm will swing around harmlessly without damaging the stack or pulling on the motor wires, I really don't want the arm to break - that road leads to flaky stack/motors and general frustration.

The motor bumpers protect the arm ends (I hate chipped cf), they also protect the motors great too, and if the arm digs into a tree or something the bumper will twist off to prevent arm delamination - that's the theory anyway.