Video: How to Make an Antler Arrowhead
This isn't exactly how the Native Americans used to make 'em, but it's still a cool project

Indigenous people the world over have used bone and antler to fashion tools of myriad design—projectile points for hunting among them. I have personally shot one animal (a bison) with a self-made bow and antler tipped arrow, and while penetration was not stellar, it was adequate. All bone and antler will sharpen to a decent edge, but I have been told that the leg bone from a pronghorn antelope gets the sharpest. Watch this video to see how to make your own antler or bone point, and mount it on a wood shaft.
Here’s what you’ll need:
Piece of antler or bone
Hacksaw or bandsaw
Rasps or belt sander
Dremel and/or round needle file.
Flat file
Sand paper
Pitch pine glue (or 5-min. epoxy)
Sinew