Can sheath leather damage a blade?

[KentuckyFisherman]

I've searched, but can't find exactly what I want to know. I read on another forum that lots of/most custom knifemakers recommend that blades NOT be stored in a leather sheath. Apparently chemicals used in tanning can sometimes damage the blade if left in contact.

I've just begun making sheaths, so I'm interested to learn what I can about whether sheaths can indeed damage a blade. The leather I'm using is 8-10# veg-tan cowhide from Tandy. What's your experience and advice?

 

[tkroenlein]

Chrome tanned leather is a big no-no. Veg tanned leather is "safe" for knife and gun use. But it is worth mentioning that leather is hygroscopic and will vary in moisture content based on environment, so it has been advised that items are not stored long term in leather. With that said, knives kept in climate control should be reasonably safe, so long as they go in dry and have some decent protection like oil or wax.

 

[LRB]

I found years ago that with well applied wetting with mineral oil, it actually offers some protection from rust, and discourages pests that might want to eat on it, AND NO mineral oil does not harm vege-tanned leather.

 

[mike miller]

How many clean their knives after use before shoving them back in a sheath? Blood etc deposited can cause damage.

 

[chrisstaniar]

Vege-tanned should be fine as far as chemicals and rusting, but the potential for moisture in a sheath and causing rust is probably the biggest risk. Most hunts involve some kind of water - rain, snow, dew, etc. Leather absorbs it and that moisture in a sheath with a knife in it will cause rust even with a stainless steel.

I tell all clients to store the knife outside the sheath. That's a lot easier than trying to get rust off of a blade.