I bought some ST 100's about a week ago. They were kinda sharp but not scary sharp like some of the other BH's out of the box. All I did was buy some jewelers rouge and a tanned peice of leather(strop). I mounted the leather to a 2x4 and rubbed in some jewelers rouge. Took the ST blades to the leather strop about 20 times...Holy scary sharp!!! All they need is a quick cleanup on a leather strop and they are good to go. Basically all the strop does is clean and polish the edge to make it razor-shave-your-arm-hair-sharp.

Please note. When doing this you pull the blade away from the edge...You DO NOT push the blade edge into the leather.