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Blade Numbers?

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“I use double edge blades made by derby and gilette. They both have
markings, i.e. 1,2,3,4 and L,R on their sides. Does this mean you can reverse
the blade for a longer durability?”

In my experience flipping the blade around doesn’t have an effect on durability. I have no idea why the numbers are there.
Author

Shave tutor and co-founder of sharpologist. Advocating for traditional wet shaving for over 20 years, I specialize in single-blade shaving with safety razors, straight razors, and lathering shave creams and soaps. I've been featured as a thought leader in men's grooming by major outlets, including The Wall Street Journal, The Washington Post, and Lifehacker. Learn old-school shaving techniques to transform your shave into a classic grooming experience. Also check out my content on Youtube, X/Twitter, Facebook, Instagram, and Pinterest!View Author posts

1 thought on “Blade Numbers?”

  1. Thought I had seen a post on one of the shave discussion boards about it being there for manufacturing purposes. Something about ensuring uniform quality of both of the blade surfaces.

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