1 pt. pure glycerin2 boxes gelatin (8 envelopes)
Enough cold water to moisten gelatin.
Heat glycerin over low flame to boiling point.Moisten gelatin with cold water. Be sure it is thoroughly soaked. When glycerin boils, add gelatin slowly, stirring until dissolved. Pour mixture into a pan approximately 12" x 9" x 1". Mixture should be about 1/2" thick.
Allow hectograph filler to set while you trace patterns to be duplicated on hard surface paper with a hectograph pencil, or type material with a hectograph ribbon or use hectograph carbon paper. (You can make up to 50 usuable copies with the hectograph carbon paper.)
When gelatin filler is thoroughly set, moisten surface slightly and apply copy to be duplicated. Apply paper to gelatin so there are no wrinkles. Smooth paper and remove. Design will be duplicated. To clean hectograph, carefully sponge off with cold water.
I have no idea what a hectograph pencil, ribbon, or carbon paper are, but I sure bet you can use this recipe for making your own gelli printmaking kit. For up-to-date instructions on printmaking, visit Linda Germaine's Blog on Printmaking without a Press.