Now roll a big chappati, take any round cutter, make same size of round puris, make a small slits on around puri with the help of a knife, so it can't be blow, and make crispy.. Make all puris, and keep on kitchen towel to dry little bit, so dry puri easy to fry crispy. Sides of dough of chappati, take again add more dough,make puris again.. Repeat same process..