Mix eggs, cold water and sugar in large bowl. In a small bowl, mix shortening, margarine and boiling water. Dissolve yeast in half a cup of lukewarm water. Mix all together in large bowl. Add flour and mix well. Cover and refrigerate. Let stand overnight. When ready to make rolls, knead dough until it is flexible enough to roll out on pastry cloth or floured wax paper to thickness desired. (Rolls will rise a lot while baking.) Cut out with biscuit cutter, fold over in half and dip both sides in margarine. Put on baking sheet and bake at 450 degrees F for 7 to 10 minutes.