Kydex staining blade

[Zimmy244]

Anyone know why my Kydex sheath is staining my blades a brownish color? It happens within minutes of being put in the sheath. I’ve coated my knives (80crv2) in wD-40 and beeswax and I get the same result. I did use a torch instead of a heat gun to adjust the fit of the sheath… did that do something?

 

[Corton93]

Strange, I've made my own kydex sheaths many times, for both knives and guns. Many different colors/patterns/brands of kydex, and used many different heating methods and have never run into that issue..

Maybe someone smarter than me will come and enlighten us both..

 

[DMG]

Maybe there is crud on the inside. Clean it with dish soap and water.

 

[pholder]

Possible off gassing from the sheath if the knife was in it while you were fitting it?

 

[DocJD]

Some Kydex sheaths have liners , or maybe some crud trapped inside .

Never heard of plain kydex having this problem .

 

[rustyspike]

Never seen that before. Kydex can scratch a blade not bleed on it.

Rich K.

 

[David Brown]

got any pics ?

 

[Kiah]

Anyone know why my Kydex sheath is staining my blades a brownish color? It happens within minutes of being put in the sheath. I’ve coated my knives (80crv2) in wD-40 and beeswax and I get the same result. I did use a torch instead of a heat gun to adjust the fit of the sheath… did that do something?

I would guess at it being the beeswax mixture. Besides being a brownish color itself, heating beeswax is purposely used to stain steel.