Search:

the felt i got was 1/8 inch thick and i use it as a hanging strop. you want to make sure it is dense enough. here's is what they told me.

For razor strops, 1/8 inch thick works best but you need...

I bought some high density rock hard felt from Duro-Felt Products . it was what they recomended for a strop. very nice people to deal with.