Linuxcnc Press brake - Open Source

I nearly made a GUI for a bender once:
forum.linuxcnc.org/38-general-linuxcnc-q...ideas?start=10#82686
It was for tube, but the same idea would work for a press brake.
Basically, no G-code, just a bend table.

Also, this video shows a rather nicely made brake. Probably worth a watch for inspiration:



But for a CNC brake I would very much suggest dispensing with all fancy linkages and using two separate cylinders synchronised by software.
This does require proportional hydraulic control valves, but maybe something cheaper than a full-on Moog Valve is usable.
Though it is possible to achieve simultaneous movement by other means:



is a particularly fine example.
A master cylinder operates a stack of sub-masters which each operate one slave cylinder.

I wasn't talking in terms of controlling pressure, I was considering ways to make a mechanically very simple brake (two hydraulic cylinders, no mechanical linkage between the two) and synchronising them with software (because that is the sort of thing we do round here)

All of the big ones that i have seen and worked with use 2 big cylinders, one on each side.

I think that there is a good argument for position feedback at each cylinder location. Maybe draw-wire encoders?