I have a bridgeport boss running mach 3 with an AH-HA drive control box. I have 1 drive board that does not always work. I can usually get it going but would like to find a good used board if any are available. If not I'll have to buy 3 new drivers and re-wire my whole machine.
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Send me an email if you got one you would like to sell bmiketuc@gmail.com