Strange thing here (in v3.62): Just changing your R variable to be larger
results in the entire sphere_sweep showing up successfully. (R of somewhere
around 0.19 to 0.20.) Likewise making it smaller than your 0.07 causes more of
the sweep to be clipped (except at the very corners.) And as you say, the
bounding_box (whether used or not) has no effect, nor does your translation.
