Bridgeport 4th and 5th axis enabled machines

[komatias]

The older you go on the machine the more likely the controllers will be dated. The machines are very sturdy and capable which really makes them prime material for retrofit to newer controls. There must be dozens of conversion stories on cnczone.

I have not worked on the electronics of the interact so cannot say which way to go with the conversion in terms of motion control. They probably have analogue intputs to the servo drives, maybe Jazz can chime in, but once you have installed the motion control, you can then add up to 6 axes in total with Mach3/4.

You are going to need to make changes to the motor spindle electrics anyway do work off single phase.