Hello folks! I'm wanting to make a leather sheath for a couple different knives that I have and need some information. I've been reading about liners for inside the sheath and cant find much information about what to make the liner out of. I've read a couple of places about using kydex for liners. I dont want to use kydex inside my leather sheath so is it ok to not have a liner inside a leather sheath? Any info is appreciated. Thanks.