by Oldbloke » 24 Jan 2015, 7:29 pm
Here is some info and recipes:
Salt-Alum Tanning
Dissolve 1 pound of alum in a wooden or plastic container that is holding 1 gallon of warm, soft water. Dissolve 2½ pounds of salt in a second similar container that is holding 4 gallons of water. Pour the salt solution slowly into the alum solution, stirring constantly. Let cool. Make this solution the same day you begin the tanning process.
Alum-Carbolic Acid Tanning
Prepare a solution of 1½ tablespoons of carbonic acid crystals for every gallon of water needed to cover the hide. Immerse the hide and soak overnight. The next day, prepare a solution by dissolving ½ pound of salt, ¼ pound of alum and ½ ounce of carbolic acid crystals for every gallon of warm, soft water needed to cover the hide. Let it cool, then remove the hide from the first solution and soak it in the second until it is done. Determine this by cutting a small piece of hide from the edge to see if the color is the same all the way through. Make the first solution on the day you begin the tanning process and the second solution the next day when you continue the tanning process.
Sulphuric Acid Tanning
Fill a wooden barrel or plastic container with enough water to cover the hide. Dissolve ½ pound of salt for each gallon of water, then carefully stir in ½ ounce of sulfuric acid per gallon of water used. Cool the solution before adding the hide. Make this solution on the same day you begin the tanning process.
Acid Oil Tanning
Dissolve ¼ pound of salt in a wooden or plastic container containing ½ gallon of warm, soft water. Let it cool, then very carefully pour in ¼ ounce of sulfuric acid, stirring constantly. Apply the solution to the flesh side of the hide with a paintbrush, then sprinkle a layer of sawdust over it. Cover with plastic and let sit for 8 to 12 hours. Scrape off the sawdust and apply a coating of neat’s foot oil mixed with an equal part of lukewarm water. Stretch the skin until it is dry, then dampen with a mixture of 1½ tablespoons carbolic acid crystals that have been in dissolved in 1 gallon warm, soft water. Roll tightly and let sit 24 hours before resuming the tanning process.
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