Customizable Protective Bellows

Quick and dirty code with few protections.
Print in vase mode with some not to brittle plastic
Don't go crazy with radius and stick to steps even divisible to height.

As usually i appreciate reports of successful prints especially in flex type materials .

x = 25; // bellows inner measurement
y = 50; // bellows inner measurement
approx_z = 100; // bellows relaxed height without sleeves
steps = 10; // number of folds
step = round(aprox_z / steps);
z=step*steps; // exact height

e