I have very long time this problem. I coated in Dark room my sheets of normal paper with Black Magic VC, but then i tried to make prints on it every print turned just a pieces of black paintings. The exposure time i tried from 99 seconds to 1! With different aperture. Than i though that this emulsion is very high contrast and it doesn't work with this negative and I ordered the other Black MAgic RBM2 (grade3). Today tried to print on coated sheets. The results are the same - everything is black. Than i tested a piece of paper with emulsion on it without lighting to put it to the developer. The result was the same again EVEN WITHOUT LIGHTING IN ENLARGER that piece was black. The developer is normal kodak for paper. The emulsion i ordered in different shops but the results are the same.
What is the problem? What did i do wrong?