After giving it a tought I came up with this idea, it will allow to use G250x pulled out of G540's (we only use 2 for the lathes) like a regular drive, the PCB is single sided so it can be machined or etched easily, the heatsink doubles as a support for the green terminal block, once I gather enough G250x out of g540s I will make a small batch of these and post photos
Pablo