Safety razor. Anyone know what to use for sharpening double sized razor blades? I have a bunch I bought off of E-bay that works great 2 or 3 times and then gets noticeably dull. The trick is to clean the blade after each use and more importantly is to dry the blade(s). I bought one of those stropping machines from ebay that was probably made in the 1950s but the leather wrapped center cylinder that strops the blade doesn't press against the blade tight enough to actually hone the blade. I took one apart but was never able to put it back together so I bought another. Same problem the leather never really contacts the blades so no actual sharpening occurs. ANy other ideas? I heard rubbing it on the inside of a glass will sharpen the blades but I never noticed much difference. I bought one of those SEEN ON TV gadets that supposedly sharpen blades and it seemed to just make a bunch of noise and seemed to damage the blade.