I cut 500 patches at a time; pillow ticking type and big enough such that I can cut at the muzzle! When patches are somewhat 'de-oiled' the thickness is around .018" and work really great in my .50 and .54 caliber ML. I use plain old Canola oil and it works just fine! Don't know for certain but I might patch wetter than most folks!
Canola oil patches by Sharps Man, on Flickr
PRB by Sharps Man, on Flickr
:Salute:
:Salute: