When Were Razor Blade Slots Used?

Razor blade slots were used in the early days of straight razor shaving. The slots allowed the razor blades to be inserted into the handle of the razor, and secured with a screw.

This made for a much safer shave, as the blades could not come loose and injure the user. The slots also helped to keep the blades from dulling too quickly.

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Today, most straight razors do not have razor blade slots. The blades are held in place by a variety of means, such as adhesive or friction.

This makes for a simpler razor, but one that is not as safe or durable as a razor with blade slots.