Marking Knives

I made my smallest knife so far this weekend:

They're marking knives for woodworking.  The blade edge is less than 3/4th of an inch on both.  When you are making furniture even the finest pencil lines are too wide and imprecise.  So you draw with very sharp knives.  They are sharpened like a chisel with the bevel only on one side so you can get the blade right up against the ruler or piece of wood you are marking from.

Both of these are made from scrap.  The blades are old files, the handles are from a piece of firewood, and the rivets are scraps of 10ga electrical wire.  One is for me, and one is is for a friend