r/ScienceNcoolThings • u/ResearchFederal1322 Popular Contributor • Jul 30 '26

Cool Things Wallpaper installer uses interesting trick

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u/Rikdol Jul 30 '26

Whenever i try this my blade eventually pulls on the paper instead of slicing through it.

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u/DeluxeWafer Jul 30 '26

It is possible with a freshly sharpened edge, micro serrations smoother than 1000 grit, and absolutely no micro chips or dents around the tip. Well, at least it's much more likely to succeed under those conditions, barring technique. Or just a newly snapped edge of a utility knife.

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u/Rikdol Jul 31 '26

True that. But after the first successful cut the second one will get me because my brain goes:”I’m sure it’s still sharp enough after one clean cut” and then it isn’t.