Not Exact -F_xyz Cylindrical

Not Exact -F_xyz Cylindrical
In Tinkercad:
https://www.tinkercad.com/things/5svxYvTRRnU
Related: (Not Exact -F_xyz Cylindrical)
Not exact cylinder -F_xyz.
Related: (Not Exact -F_xyz Spherical)
Not exact sphere -F_xyz.
https://www.thingiverse.com/thing:3118991
Not Exact -F_xyz Cylindrical (Similarity):
A + B = INFINITE,
a + b = finite (zero : 0),
a - b = -f,
b - a = +f,
(-f) + (+f) = 0 (zero : exact),
(-f) x (+f) = -F (not exact).