> So energizing and consuming 7/4 more discs is just pure waste. That is and assumption and not self evident. There are lots of reasons one might want to use

> So energizing and consuming 7/4 more discs is just pure waste. That is and assumption and not self evident. There are lots of reasons one might want to use many cutters. It is a common practice in wood and metal machining, for instance[1]. Having additional cutting surfaces reduces the rate of wear, provides redundancy in case of chipping, increases the mean time between required services, allows cutters to run cooler, reduces chatter, improves surface finish, and a host of other reasons. Seems like you could research it. 1: https://www.advancedmachinery.co.uk/content/product/8500_0_z.jpg https://www.advancedmachinery.co.uk/content/product/8500_0_z...