Thanks for that image of your analog driver boards - I think I have three different types of driver board in my machine, one GA4568EA? amp that looks like yours, one of the AMP-0015 AMC amps and two of some older GA4568SE-1 ?? type amp boards, so quite the mix-match. But at least all the of the Glentek boards look very similar as far as potentiometer locations and I can probably figure out the correct feed points. I can probably use the AMP-0015 as the 4th axis amp(maybe that's the location its already in) - I don't have a 4th axis mechanism at this time. I also do not have the machine here yet to check the part numbers, just some pictures taken a month ago..
Yeah I agree MACH3 is not an option at all, I used it on a sherline mini mill via parallel port awhile ago and it was not reliable - and the dedicated hardware for motion separate from the PC is what brought me to the Kflop originally.
I wonder if Kflop 2.0 is in the works anytime soon.. The main processor on the board is at end of life by TI (unless its been upgraded from the one listed in the manual) and the board is about 10 years old I think?
Those intake parts look awesome! Video of something like that being machined on your 4th axis would be cool to see. Maybe a timelapse?
Do you have any type of probing on the machine?
I think I am going to at least try the CNC88 control now - I have learned I don't have to buy anything to run it via the serial port at 9600 baud as it should work with a USB to serial converters I already have. And found out about the free NClink software to send it files. But when something breaks(just a matter of time) or I feel the existing control is limiting me I am pretty sure this is the best option. Nearest other option is $8k for Calmotion - Kflop is possibly better than the Calmotion once its done, Kflop is more labor to setup than Calmotion, but much less $ - but I really don't have any experience with either to make a direct comparison.