I want to share something I have just discovered. I have been modeling for a good number of years and just discovered this. I have been very unhappy with single edged razor blades and just discovered there are three different kinds of S.E.R.B.'s. To make this post the shortest it turns out blade sharpness is determined by blade thickness. I know, "Geez Louise" how did he ever miss that?
Here is the why and the key is blade thickness needs to be .009 .
http://www.freerails.com/view_topic.php?id=5725&forum_id=57
And Ebay offers some these...
http://www.ebay.com/itm/2-X-100-PACK-009-Single-Edge-Razor-Blades-NEW-American-Line-009-/171503718479?cmd=ViewItem&hash=item27ee6b104f:g:GHgAAOSwAHZURVdM
I hope I have not offended anyone with the links, but I need to share my stupidity.
Ken