How do scissors “know” what hand you’re holding them in?

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I’m left-handed and growing up, in school, there were never enough left handed scissors between myself and the maybe two other lefties in my class so I would often need to use right-handed scissors. But they would either not cut paper at all or kind of tear the paper, forcing me to switch to my right hand to get the scissors to cut smoothly.

Just yesterday I needed to trim a label and no matter how I angled the scissors, they would not cut the paper but they immediately did once I switched to my right hand. Thus, how do scissors “know” which hand you’re holding them in?

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78 Answers

Anonymous 0 Comments

Left or Right handed scissors have the blades on the other side of eachother for the viewing angle of the pinch point.

On Right handed scissors, when you put it in your right hand to use it, you will see that the blade on the left side(attached the the thumb) will open downwards and you will naturally be able to see the line that you’re going to be cutting as it gets cut.

Put that same pair of scissors in your left hand, and you’ll notice that the blade that opens upwards(attached the the hole the rest of your fingers go into) is going to block your view of that pinch/cut point and you’ll usually miss your cut by the width of the scissor blades.

Left handed scissors are the opposite in that the when holding them in your left hand you will be able to see that pinch/cut point.

You cant just flip Right handed scissors over because if you try, you’ll notice the “right blade” always opens upwards and blocks the view in your left hand. In left handed scissors the right blade opens downwards, and so they will let properly see it in your left hand

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