a) Vacuum Formingb) Rotational Mouldingc) Spinningd) Fabricating
Depending on the finished shape, a,b,c and d can be usedA faster way would be stampingA coupon of aluminum is placed in the machine, over a female die of the dishA male die of the dish is then pressed/ stamped on top of the coupon of aluminum, pressing the coupon down into the female part of the dieThe male part of the die is then raised up and the finished bowl is extracted by springs in the female dieThis is the method used to make many car parts like bumpers, door panels, hoods etc The entire process from start to finish only takes several secondsWingman