I picked this one up at the V&A Fashion v Sport exhibition which I found to be very underwhelming. One of the sportwear customisers featured was I-SAW who specialise in using a rotary engraver to put fine patterns on to sneakers. The call this process engraviti from engraving and graffitik, in honour the engraver they use in replace of a spray can. You can find out more at I-SAW from their blog.
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