Twotrees 500w High Speed Air cooled Spindle Motor

I really like this 500w spindle. It has a lot more power than the 85w spindle that comes with the ttc 450 pro machine. I purchased the ultra because this spindle comes standard. I wanted to have a replacement available in case I do something stupid, like forget to turn spindle on before program start.

It's got enough power but the brushes burn out quickly and it's not easy to replace them due to them being hard wired. After I disassembly I found the brushes had shattered and couldn't replace them as it had broken all the plastic brush holding mechanism. Closer inspection I found that the wires were drilled and glued into each brush. Poorly designed to be honest.

I'm sure it's going to be great but I can't figure out how to use the machine yet. Been trying with no luck.