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I see some blue tape on the edges of the poster in that next-to-last photo. Was that to protect them from the clear finish? Is that painter's tape? I'm not familiar with it; is it easy to remove without damaging paper? Was your poster glossy?
How do you know? :PSeriously, I'd like to hear your story. What materials/brands were your poster, your foam core, and your adhesive, exactly? I'm sure most adhesives would melt foam, but I didn't know spray adhesive would penetrate the card stock or poster board that covers foam core.
Raspberry Pi Class
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