Just to chime in.
I haven’t found the JTECH plugin to work. It’s written (I believe) specifically to work with their JTECH GRBL firmware, which we don’t have. I’ve been planning to look more into the GRBL on Ramps thing that another forum user tested out, but I haven’t had the time.
I’m also considering temporarily borrowing the Arduino/GRBL shield from my XCarve and playing around with that until I can get another setup for GRBL.
Right now, I’m using Easel from Inventables. The limitation is that it doesn’t do lasers, so I have to edit the resulting Gcode files and use M106 in place of Z down movements and M107 in place of Z up (presuming I’m just etching).
It’s not perfect, but seems to work.