my method for doing skull mounts
I have done several dozen skull mounts mostly deer, a couple cow, and my first cyote. here is the method I use, this was typed up for another forum.
European Skull Mount Instruction
1. Purchase a box or two of Arm & Hammer supper washing soda. This product is 100% sodium carbonate (also known a sal-soda) it does not contain fragrance or other additive. A little fragrance would be all right if you ever done a half rotted skull that had been laying around awhile. This is the same stuff that taxidermy supply stores sell for $10 or more for a couple cups. Last time I purchased it was $1.97 per a one pound box. Sodium carbonate is caustic and will cause a chemical burn so wear gloves. What the sodium carbonate does is turn meat, skin, and brains to a jelly like substance that can be easily scrapped off.
2. Find something to boil the skull in; it should be big enough to submerge the skull but not all of the antlers. I made my boil pot out of an old pressure tank from a well. I cut the top off and welded some angle iron for legs. It fits nicely over a propane turkey cooker burner. This is large enough to do a cow skull along with a deer or two. Do not use a pot or container that you would use for anything else that you might eat. Not enough is known about chronic wasting disease and the abnormal protein called a prion that cause this disease to risk using a container that may in the future have contact with food. The boiling process is rather nasty and much of the meat and brain fats and proteins will collect on the sides of the pot. If the skull is not fresh the smell can be rather repulsive. I wanted to experiment with a several skulls before trying this process on a hunting trophy. I knew a location of where the state dot dumped the deer that were killed on the interstate. These skulls where mostly cleaned out by bugs with a few scraps of hard leather like skin left in patches. I lost my cookies a couple times during that boiling and I was outdoors at the time.
3. Prep the skull by stripping off as much skin and meat as possible. The more that is removed the easier the cleaning after boiling will be. Try to remove as much of the brain matter that you can. A piece of wire with a hook on one end attached to an electric drill will help scramble the brain. A long screwdriver will also help remove the brain mater from the cavity. To protect the antlers from the boiling residue wrap in tinfoil. The tinfoil easily forms around all the little bumps around the base of the antlers. Then wrap the tin foiled antlers in plastic wrap. I use the plastic wrap that is on a handle used on loading docks. I have seen this type of wrap at home center stores or the regular kitchen wrap will work also.
4. Add 1 cup of the supper washing soda to five gallons of water. How much water and soda depends on the container. Wrap a piece of wire about a foot long around the rack this makes it easier to remove the skull from the boiling water. You can place the skull in the water right away this will help soften any meat, skin, etc. Boil the skull for ½ to ¾ hour. Remove skull peel and scrape off as much stuff that will come off. I use a toothbrush, plastic scraper, pliers and dental picks. You will probably not get all the stuff off in one try. Boil the skull for another ½ to ¾ hour then repeat scraping. If a lot of gunk remains you can do this step of a third time. Be careful of the nasal cavity there are some very delicate bones in there. After the 2nd boiling I use a hemostat clamp to grab the cartilage and nasal tissue. This piece of tissue should be pulled gently out. Go over entire skull with a hard toothbrush. Any remaining pieces can be scrapped with a dental pick. There are several holes in the back of the skull that will have cartilage in them. These are best scraped and picked out because they will turn yellow in time. The teeth may fall out of the skull while boiling so check the skull for missing teeth, they can be supper glued back in when dry. You do not want to boil the skull for to long because the supper washing soda will eventually start to eat away at the bone. About an hour and a half is about the maximum time you want to do this. After each boiling period I rinse the skull with a hose. I drove by a guy sitting in his front yard boiling a very large racked skull in a pot over a fire. I stopped and he said he had been sitting there for 4 hours and still the meat was not coming off. The base of the antlers was starting to flake in a few places. I ran home and came back with a bag of the supper washing soda. I talked to the guy later and he said the meat had just dropped off after adding the soda and boiling for another ½ hour. He wanted to pay me for the soda and the tip, I refused and told him it was about 60 cents worth of soda and I did not want to see a nice skull like that get ruined.
5. To bleach the skull I place it in a plastic shoe box. I leave the tinfoil and plastic on the antlers. Cover the entire skull with a good quality absorbent paper towels you can tape them around the skull. Soak with peroxide and place about ½ inch on bottom of plastic shoe box. Place plastic shoe box in dark cool location for four or five days. Check daily to keep towels moist with hydrogen peroxide. Remove towel and tinfoil and plastic wrap and hang outside facing the sun out of reach from critters for a week or two. If skull is bleached to you liking you can repeat the plastic shoe box, paper towel, peroxide method. Do not over do it, the peroxide will start to eat away at the bone. The hang time outside may depend on you location also. I have so far used just the drug store variety of hydrogen peroxide but was recommended to me that I should use the stronger solon style hydrogen peroxide. This was explained to me as a method to disinfect or sterilize the skull. I stopped by a solon wholesaler to inquire and the solon grade hydrogen peroxide they had had other ingredients mixed in and never got around to research what it was and how it might affect this process. I have a couple of skulls to do in the next week or two and may try the solon hydrogen peroxide out to see how it works, who knows it might shorten the process.
6. The last step is to spray with a clear lacquer or shellac finish. Use a flat not gloss finish. It is up to you if you want to spray the antlers or not. I have done both ways and will probably re-spray the ones that I did not. Reasons for spraying are: bone will start to deteriorate and dry out and become brittle, this includes the antlers. The spray will help reduce this process and will also act as a fungicidal sealer. I personally do not mount the lower jaw or place the skull on wooden plagues. I usually run some thin wire through the base of the skull and screw to my skull wall.