bench planes - tapered or parallel blades?

bench planes - tapered or parallel blades?

Although this article is about blades used in wooden planes there is an interesting parallel between the blade choices available to wooden plane users at the start of the 20th century and the choices facing metal plane users at the start of the 21st who must choose between thick vs thin irons. Old wooden planes...

Although this article is about blades used in wooden planes there is an interesting parallel between the blade choices available...