Tanning a snakeskin is a very simple process. Follow these easy steps and you will soon be finished.
1. Skin out the snake and make sure that all the meat and fat are removed from the flesh side of the skin.
2. Mix a solution of equal parts pure glycerin and rubbing alcohol in a sealable container. Make enough to fully submerge the skin.
3. Loosely roll the snakeskin, put it into the solution, and seal the container.
4. Let the snakeskin sit for 5-7 days stirring once a day. Make sure that the skin is fully submerged.
5. Remove the skin from the container and rinse with water.
6. Use a dull knife and scrape the flesh side to remove any loose membrane. This will give the flesh side a nice clean look when you are finished.
7. Spread a light coat of the pure glycerin on the flesh side and let it hang dry for 24 hours.
8. Use a damp cloth to wipe any excess residue off the skin and you're all done.
I use this method when I find a road kill snake that I can use to make into custom pens. I would never kill a snake for this purpose, but if they are already dead due to road kill, I hate to see them go to waste.
Here's a photo of a pen I made from a Copperhead skin when I found it on the road. I have a friend who found another one two days agao that he's saving for me which I will use for pens.