Smartphone cover...
Discussion
I recently found what I think is an abandoned phone cover. It's 158 x 74mm, just a piece of clear plastic with rounded corners. It would be ideal for the windscreen of a model boat I'm making. However one side felt sticky to the touch - a bit like a Post-It note - so I tried to clean it. Soap and water didn't shift the tack, neither did meths or white spirit. I thought T-Cut had polished it off but it came back. What on earth is the layer, and how do I get rid of it please?
Ledaig said:
Could be a silicon cover and all you are doing is cleaning it back to 'good' silicon each time.
One side is smooth and shiny, as it should be. The other seems to have an invisible texture on it - you can't see it (it looks clear) but you can just feel it with a fingernail, and has a slightly sticky feel. It immediately shows smudges and dirt.Today I tried to cut the screen into the shape required. I cut a paper template, stuck it on and tried to cut round it with a modelling knife. To my surprise the plastic, rather than scoring, cracked in all directions. It was then that it became clear that the sticky layer was actually a thin laminate, and with care could be pulled away from the clear plastic. But the point of the knife made no impression on the plastic; it was as hard as steel. I tried a bandsaw, and the teeth just shattered it. A scroll saw (very fine teeth) was no better. So the smartphone cover went in the bin!
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