I had 2 cakes of Nyman-Hartz that were getting small and difficult to handle.
So, I melted them and combined them into 1 "new" cake:
1. It helps to chill both cakes in the freezer for about 20 minutes - this helps them shatter into small pieces/powder.
2. Put into a freezer bag and use pliers or a small hammer to gently pulverize the cakes.
3. Fabricate a foil cup (4 layers - make sure it doesn't leak).
4. Cook over a low flame and melt into a thick syrup. (Use pliers to hold the foil cup.)
5/6. Pour into a small, plastic cup - this one is the top of an aerosol spray can.
7. Wrap the outside of the cup with tape, and draw a line showing where to remove the plastic and expose the rosin. Use an Xacto knife, heated red-hot, to cut thru the line on the plastic cup - this is best done with the cake "chilled", as it will release from the plastic easier - better to flake off than stick, which can make a mess. Use small pliers to peel the plastic off in sections. If the edges are "sharp" or irregular, simply hold the cake over an open flame for a few seconds, and rotate - this will round off those edges.
Put back in the freezer for 5 minutes to stabilize the cake and help it return to room temperature.
8. Let it stabilize overnight, as the core may still be too soft.
This recombined rosin always feels great - I have a theory that the top layer, (that is exposed to the air), dries out(?) and becomes "glassy", and difficult to apply.
I have NO Scientific Evidence to support this theory.
Thanks.
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