

Image showing some 'miniature' series "C" Loops - far left being a usual sized candidate, and, graduating to to the right, some smaller exemplars, with finally the smallest I can do.
Far right is sharpened to be a Carving Tool rather than a Trimming Tool.
All in all, there is a range of size in the 'miniature' Series Loops of all shapes, whether for Trimming, or, for Carving uses.
Acute 'corners' of those Loops having 'corners' to their bends -
Acute
corners' are sometimes wanted for Trimming or Carving, where, usually, a more roundish 'corner' is prefered. Far right, while it happens to be the smallest one shown, has about the tightest or most crisp 'corners' I am able to do, and please do not ask me for this unless you definitely need it to be so, since it is very difficult and tedious for me to do.