Build and Repair Goes Bug Nuts and More Research Points Hostile Star System Ep 19 

I have considered making a grinder ship but I'd either have to build a giant one to make grinding down the large ships easy or make drones and at this point I don't think I'd trust a drone not to fly into something and destroy itself. In the end the vast majority of ships end up just being sold for the money so it wasn't worth building a grinding ship because I don't grind all that much.