I cannot be responsible for your errors- impossible for me to know your level of experience, equipment, clay, kilns and so on. Experiment at your own risk. Also see note below for a freeze worthy outdoor recipe with no grog. Most all conversion to paper clay can be raku fired even if there is no grit, grog. Test fire a sample to be sure.
Small percentages grit or ok.
I ask for a rotary blender attachment with propeller blades at the end of a 24 inch shaft. Use plenty of water. Neither I or New Century will take any liability on this or officially recommend it- use at your own risk. The wimpier the tool used the less satisfactory the result except for the better toilet papers which should break down extremely fast and might be good for test batch experimenting. For further details see the books and journals section on his site.