I use aluminum sulfate for a pickle and I also use a fleshing machine,I can not seam to get very much strech when I am ready to mount my deer heads.Any Ideas?
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Alum shrinks fibers (great for slipping hides) but for normal good capes go with formic or safetee acid and watch those capes grow. Good Luck
Aluminum sulphate is not a pickle in any of the books on tanning I have.
It is a tanning agent. Your pickle should have some type of acid to induce a low pH, neutralize then mix the A/S to a pH of 4-5.
Have you tried to run it under plain cold water? Try that and see if it losens up after 5 minutes or so. JOhn C