crack is a cheaper, less pure, easier a safer to make form of base. coke is mixed 1:1 sometimes as much as 2:1 with baking soda and water..and a few drops of ammonia true freebase involves the use of ether to separate the base from the hydrochloride salts....in order to prepare it correctly the finished product must dry for 24 hours..... people try to accelerate the process by using heatlamps and electric burners.......very dangerous...... alot of the baking soda that binds to the crack base remains in the finished product..(this is why crack rocks are cheaper than quality pearly white scaly rocks)..whereas base made with ether uses no binders whatsoever therefore you got a much purer base I've tried both .... theres no comparison ...... I was hooked on freebase back in the day...... its the most intense high i've ever experienced....