honestly, im not quite sure there is any scientific method to get shatter every time. at least it looks like it. im always doing everything the same way and i get every consistency there is. even from same starting material. one run is shatter, one is budder and one is a bit sappy. im like wtf? xD
My Stuff gets scrapped and then put in the oven at about 50-60C° for 30-60 min.
Washes are normaly around 30 seconds. sometimes the first wash i just pour in, 1 or 2 gentle shakes and pour out. thats like 10 sec contact time.