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razor blades (feddit.de)
submitted 8 months ago by sexy_peach@feddit.de to c/memes@lemmy.ml
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[-] Kecessa@sh.itjust.works 100 points 8 months ago

Safety razors with disposable blades were introduced about 120 years ago, at one blade a day that's a bit less than 45000 blades

Double edged blades dimensions are: 0.1mm x 42.7mm x 22mm for 98.21mm³

45 000 blades would take a volume of 4 419 450mm³ or about 270in³

A regular indoor wall is made of 2x4 and each stud is 14.5 inches apart (16 inches on center). A 2x4 is in truth 1.5" x 3.5" so each inch of height inside the wall is 3.5 x 14.5 x 1 which is 50.75in³

45 000 blades stacked perfectly would therefore use 270 / 50.75 = 5.32 inches of the wall's height... So even if they didn't stack perfectly, it's pretty safe to assume that there's enough space inside the wall for hundreds of years at one blade a day (especially since old houses usually used true 2x4 and had their studs at 24" on center)

[-] prowess2956@kbin.social 45 points 8 months ago

Also, most people use blades for more than one day's shave. I think more like 3 - 7, depending on the blade and how picky the shaver (I get more than seven shaves per blade).

[-] lightnsfw@reddthat.com 18 points 8 months ago

Same. I've gone 6 weeks on one blade if I was working from home a lot and didn't have to shave often.

[-] Kecessa@sh.itjust.works 10 points 8 months ago

Yep, just trying to show how there's no way someone fills that wall in their lifetime

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this post was submitted on 20 Jan 2024
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