I bought my R7 last November to replace my near 5 year old Piranha, got it (sort of) running in December, running for simple things in January - - and Hobby-Fab went away in February. Nevertheless, by this month I had conquered the R7 and had started using it in my woodworking business.
Then today I start a job, hear the spindle start and turn away just in time to hear the $40 bit snap. Seems the spindle started, but the shaft did not. It just pushed the static bit into the wood and tried to feed it until it broke.
A number of tries later I had succeeded only in heating the spindle but not in getting any movement.
The water pump is working fine with a good flow through the spindle. The shaft moves freely when the spindle is off so did not freeze, but is very rough when turned by hand with the spindle running.
My simple mind says it is either a gcode problem, a controller problem, a wiring problem or a spindle problem. The gcode comes from Vcarve Desktop with the grbl post-processor and has never been a problem before. Since the spindle sounded as if it was running, and it did heat up, I want to rule out any controller or wiring problems. If I am right (big IF), that leaves just the spindle.
So I am looking for someone who has taken one of these things apart. Is it likely that the problem will be repairable? Or do I just shrug it off and order a new one? Don’t want to do that but since I am in the middle of projects that require a CNC, and a CNC bigger than the Piranha, I do not want to waste a lot of time trying something that is a lost cause.
Any suggestions out there?