The Hareline Bend-A-Blade is a tool that will help in forming deer hair heads. It helps to hold the razor blade in a curve while you cut the hair. With this tool, you no longer have to worry about the razor popping out from between your fingers & flying around the room. It also makes the job a lot quicker when tying up a bunch of flies with deer hair heads. Since you can adjust it, it makes for going from one size fly to another at the vise easy & quick.
I don't normally go in for new gadgets, but I thought this one was a good idea & worth giving a try. You can pick one up at your local fly shop that is a Hareline dealer, or a trusted source to buy one online would be J. Stockard fly fishing.
(please note: I'm not affiliated with J.Stockard or Harleine in any way. I only mention these as sources for this article)
Below is a forty second video showing how the tool works.