Gang milling cutters feature a singe arbor that carries groove cutters. This is the cutting tool of choice for users who are looking to increase productivity. It engages each of the groove cutters simultaneously to create slots. The slots could be of the same size and shape, or they could be varied.
As you can guess, the gang milling cutter generates significant cutting forces. The arbor carrying the cutters must be sturdy enough to withstand these forces. The same applies to the cutting tool, because you need to have a long tool life.
At this juncture, we bring the aspect of machine tool setup. The way you set up the slot milling machines matters a lot. Experienced machinists know how to setup the machines and the best tools to use for optimal slot milling results.