Keep away from heat & cold

**k1rod** · 09-02-2008, 07:53 PM

I just bought a couple of cases of one of my favorite blades, the Schick Plus Platinum. I was a little surprises to see the boxes all have test on them that says "Fragile : Keep away from extreme heat or cold." What is heat or cold going to do to razor blades?

**cooncatbob** · 09-02-2008, 08:07 PM

I don't know about cold, but heat will take the temper out of the edge.
Which is why you shouldn't soak good cutlery in hot water or run them through the dishwasher.

**stobes21** · 09-03-2008, 05:47 PM

Perhaps expansion and contraction will cause friction against the wrapping material, and/or minute warping of the metal that will throw off the edge?

**scottish steve** · 09-04-2008, 06:53 AM

I think this might just be another example of corporate-protection and paranoia, like the whole " may contain nuts" thing

**Shave Cat** · 09-04-2008, 07:40 AM

Originally Posted by scottish steve

I think this might just be another example of corporate-protection and paranoia, like the whole " may contain nuts" thing

Yeah, I recently bought a jar of peanut butter. The label states, "CAUTION: MAY CONTAIN PEANUTS". DUH!

-Clarke

**mace** · 09-04-2008, 08:24 AM

I don't know about cold, but heat will take the temper out of the edge.
Which is why you shouldn't soak good cutlery in hot water or run them through the dishwasher.

But temering usualy takes place at around 150°C-260°C (300°F-500°F) and 370°C-650°C (700°F-1200°F).

I ain't never seen no dishwasher do'dat!!

I believe it is an old wifes' (husbands' ) tale.

Untill I know better!
All the BEST!

mace

**Chibbi** · 09-04-2008, 08:24 AM

With all those silly law suits who can blame them ?

**Aevum** · 09-04-2008, 08:29 AM

does this mean i shouldnt leave my DE inside the warm water while shaving ?

**htownmmm** · 09-04-2008, 08:33 AM

Originally Posted by Aevum

does this mean i shouldnt leave my DE inside the warm water while shaving ?

yep!

marty

**jimmyray** · 09-04-2008, 08:51 AM

Originally Posted by cooncatbob

I don't know about cold, but heat will take the temper out of the edge.
Which is why you shouldn't soak good cutlery in hot water or run them through the dishwasher.

Like previous posters mentioned, loss of temper happens at much higher temperatures.

It isn't recommended to put good knives in the dishwasher or sink because they could get dinged up against other items, and it isn't good to leave them wet for long periods.

Another reason you shouldn't soak cutlery in the sink is because the likelyhood of reaching in to get the knife and cutting yourself.

**stobes21** · 09-04-2008, 11:12 AM

Originally Posted by jimmyray

Like previous posters mentioned, loss of temper happens at much higher temperatures.

It isn't recommended to put good knives in the dishwasher or sink because they could get dinged up against other items, and it isn't good to leave them wet for long periods.

Another reason you shouldn't soak cutlery in the sink is because the likelyhood of reaching in to get the knife and cutting yourself.

Indeed. Wood handled knives will also damage very quickly with all the heat and moisture inside a dishwasher.

**cooncatbob** · 09-04-2008, 12:12 PM

Sounds like a job for the "The Myth Busters"
Any body want to volunteer to try to bust this myth?

Take a brand new razor blade and put it in a pan of boiling water, let cool then test the blade.

Take another blade and put it in the freezer over night, take out let return to room temperature then test the blade.

**AsylumGuido** · 09-04-2008, 12:44 PM

Originally Posted by cooncatbob

Sounds like a job for the "The Myth Busters"
Any body want to volunteer to try to bust this myth?

Take a brand new razor blade and put it in a pan of boiling water, let cool then test the blade.

Take another blade and put it in the freezer over night, take out let return to room temperature then test the blade.

Then blow it up with dynamite and test the blade.

**talibeard** · 09-04-2008, 01:19 PM

Originally Posted by cooncatbob

Sounds like a job for the "The Myth Busters"
Any body want to volunteer to try to bust this myth?
Take a brand new razor blade and put it in a pan of boiling water, let cool then test the blade.
Take another blade and put it in the freezer over night, take out let return to room temperature then test the blade.

Both will not do much;boiling water is not going to do anything to tempered steel and cold will make the blade brittle but only as long as it is cold. You might get a problem when the changes of temperature are many and in a really short period of time. But if you cool down your blade to a minus 40 (Celsius or Fahrenheit) and take out a sledgehammer (a real one not the 39C) you will get a lot of small pieces I guess. Extreme heat for tempered steel would start from at least 150-160 degrees celsius so hot water will never be a problem at all.