Will HP Photosmart 6510 print cardboards?
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If it’s a card-stock type paper, then it might work good. Photo paper? You should have good results with that. Avery and a few other companies make a variety of products that work in nearly all printers. Anything thicker and the rollers probably won’t pull it through or it may not fit through some portions of the mechanism.
If you’re talking about anything thicker, forget it. Most things like corrugated cardboard are printed using either some sort of dedicated specialty printer, or a silk screening or stamping process.
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Why are you bumping? I think you got an answer…