Case Trapper runs a 3.25″ clip point blade in Tru-Sharp Surgical Steel; Opinel No. 10 Carbone runs 3.94″ of drop point in XC90 Carbon. The Opinel No. 10 Carbone is the lighter of the two by 1.46 oz.
01234567 in
Case Trapper · Clip Point
3.25″ blade · 4 oz · ~0.62″ tall
Opinel No. 10 Carbone · Drop Point
3.94″ blade · 0.08″ spine · 2.54 oz · ~1″ tall
Spine thickness, same scale
0.08″
Length and spine thickness drawn to true scale from published specs. Outline traced from the maker's side-profile photo.
Opinel's carbon steel. Almost pure iron and carbon, which is why it takes a screaming edge off a simple stone and why it stains the first time you cut an apple. That patina is protective once it forms. Cheaper and sharper than the stainless Opinel, and useless if you will not dry it.