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I am wondering does the Spats or any other part of the armor have to have a edge on it? I dont see anything saying they need to have that. Im wondering if this is the case can i just make a curved Spate, Shins, and rounded Vambrace from plastic without the edging like the stormtroopers have?

No edge requested.
You can do one to get a better look of the spats.

Thank you.