Not long ago I made a short video demonstrating how to break the bottom out of a bottle by hand. My original purpose in doing this was to use the glass bottom as material with which to practice my knapping skills while making arrowheads. Each time that glass disc would pop off the bottom I would mention to onlookers that without further work, this was a tool unto it’s self. It has a very sharp edge that could be used for cutting and potentially skinning and dressing out an animal.

As survivaltek readers may attest, I’ve been known to harvest astragalus bones from deer roadkill. On such an occasion I decided to test out my theory with this improvised cutting tool from a bottle. To my delight and amazement it cut clean and easy! After the initial incision I began to separate the hide from the carcass. Although I didn’t pursue the meat and organs, I’m sure that it would accomplish the task. That further work will be a project for the future.

Although most folks are not accustom to butchering, it’s good to know that in an emergency situation and without conventional tools, you can accomplish this task that could be a key part to your survival.

Now, when I see this, my eyes light up because I think “astragalus bones” that I use as sockets for my bow & spindle fire kits. When my wife sees this, she cringes because she knows what’s coming next. In this case, we agreed to postpone my harvesting task until after our breakfast. Good thing… when I arrived at the scene on our return trip, I could see that the deer was not exactly fresh, and definitely had an “air” about it. In fact, I decided to harvest only one of the bones. In the end, this adventure influenced our outing to proceed directly home. My wife recovered while I boiled the bone to preserve it and help remove excess remaining tissue. Men, I recommend this as a “guys-only” activity whenever possible.

In any case, if you decide to harvest astragalus bones in this way, cut along the front side of the rear leg joint. This opens the hide and severs all of the front ligaments. Then hyper-extend the joint forward by stepping behind the leg and placing your foot on the joint while using both hands to pull the upper and lower leg bones against your foot pressure. This is similar to breaking kindling wood. The astragalus bone should pop up where you can cut the side ligaments to release it.

You can learn more in my article “Astragalus Bones“

These bones have been traditionally used for a socket in the bow and spindle fire method, and are very durable. They are prized for their authentic part of traditional primitive fire kits, as well as great performance. Sockets are not so easy to come by naturally. You can find some rocks, shells, etc., and you can just use another block of hard wood with a hollowed pivot point, but the socket depth and durability of these materials may make it difficult or limited in their use.

Once removed from the leg, they can be boiled to harden and any connective tissue is more easily removed from the bone.