Generally tape, because I'm lazy and it's easy. If the screen is particularly bad though I'll use emulsion and a small paint brush. Paint over the pinholes over the light box, then just take the screen out into the sun to expose it.
A forum community dedicated to T-shirt merchants, professionals and enthusiasts. Come join the discussion about graphics, commerce, dyes, prints, collections, guides, displays, styles, scales, equipment, accessories, reviews, classifieds, and more!