I had been getting very mixed results with ARTLINE 70 HIGH PERFORMANCE permanent markers and SHARPIEs were drying out too fast for me so I tried other SHARPIE products called EXTREME FADE RESISTANT and INDUSTRIAL SUPER PERMANENT INK..........and a generic marker called CASEMATE. http://www.learnmorsecode.com/laminator/etch/index.html Difinitely concluded there was differences enough to avoid BLUE and GREEN and CASEMATE
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SHARPIE PERMANENT MARKER ETCH TEST
2016-11-12 by Rob