after 2 years of sitting in a box i finally mounted the 6kw hqd atc spindle which i have connected to the vfd and is running smooth , at present i plan to use the manual toolchange button until i get my head around the auto toolchange and macro side of things.. i am using the uc300eth-5lpt with the ucbb with uccnc , i understand how to get the solenoid working with the button , my question is does this have to be connected through the breakout board ? and is there safety measures i need to put in place in case of a tool ejection when the spindle is in use , any advice would be much appreciated. thanks