Technique: Repairing Gillette Mach 3 Disposable Razor Blade lubricated strip

Member-Contributed Guide

Member-Contributed Guide

An awesome member of our community made this guide. It is not managed by iFixit staff.

Disposable razor blades can be re-sharpened using blue jeans. However, the lubricated strip will wear down eventually, bringing the blades too close to your skin, and you'll begin to cut yourself. This guide will show you how to replace the strip.

  • Author: PartsIn
  • Time estimate: 5 minutes
  • Difficulty: Very easy

I like to save money by re-sharpening my Gillette Mach 3 blades by stropping them against some blue jeans. This gets them plenty sharp. However, once the lubricated strip on them wears away, they are too close to my face and begin to give me cuts. I don't want to have to keep spending money on new blades, so I figured this trick out to replace just the lubricated strip part and effectively keep the blades at a safe distance from my skin. Should now be able to keep using these for a very long time.

Edit Step 1 Repairing Gillette Mach 3 Disposable Razor Blade lubricated strip  ¶ 

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Edit Step 1 Repairing Gillette Mach 3 Disposable Razor Blade lubricated strip  ¶ 

  • Cut away the old (likely disintegrated) strip from the blade using a knife. Get a waterproof bandaid and cut 4 or 5 thin strips from the sticky part and layer them to make a new strip. Use the smooth-type bandage; not flexible fabric. Then sharpen by stropping on blue jeans. Voila! Shaves just like new. Blow dry after shaving to prevent rust.


To reassemble your device, follow these instructions in reverse order.

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This is great! I'll have to try it. I'd love more information on how to sharpen the blades on blue jeans. How much stroking does it take to sharpen them? How do you tell when it's sharp enough?

Kyle Wiens - Reply

Hey it takes about 15 to 20 strokes each way ( up and down) to maintain it. And 150 to 200 each way to re sharpen it. And when you can take off most of the hair on your arm in one pass its sharp enough

chase morris -

Yeah, a guide on "stopping" a razor would be great!

Daniel Beardsley - Reply