Hi, I`m going to design turning table (diameter of 60-80cm) made from aluminium, it will spin by the mean of an electric motor. I want the spinning speed to be variable, so I can control it from 0 up to 300 rpm (gradually or by steps where each step is 50 rpm) by them mean of remote control, switch or whatever. The power will be used is 220-240V 50Hz. My questions are: 1- What is better to use and easier to implement? AC or DC motor? 2- Whatever has been chosen AC or DC, what is the best and easier way to control the speed? How will i control the speed? Thanks.