Is it just me, or did you photoshop the blade profile into that calculator? I've never seen it spit out anything that wasn't a plain, blocky 't'.
I did! It was a quick imprecise grab from a photo, so it's not *entirely* clean and accurate, but it gets the idea across as to what's where.
I've no Idea how Mr. Johnsson does what he does, but the output of the calculator is a vector svg file, so I would *assume* that he manually pastes in a vector image he's made.