It looks like thwre are two blades - a fixed one that goes under the fabrtic and the rotating octagonal one that is shaped so it has an opening and closing morion as it rotates against the fixed blade (My best guess from looking at it).
I haven't seen anything like it before so can't be any help about how well or badly it works.
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timeasmymeasure
no subject
Date: 2016-09-12 05:10 am (UTC)I haven't seen anything like it before so can't be any help about how well or badly it works.
Teddy