So I've got an old Tree J325, it worked a treat when I tested it, then once it was hooked up in my shop it seems the spindle gave up the ghost. I've been faffing about trying to get the spindle drive working, and it seems something is wrong with the encoder. Replacing Yaskawa parts is ludicrously expensive, so I'm thinking I'll likely be better off replacing the motor and drive entirely. (Here is my initial thread on the issue: https://www.cnczone.com/forums/tree/...ded-error.html)

Does anyone have any experience converting a spindle drive, who can provide some guidance? There's tons of retrofit threads on the J325, but those all seem to retain the old spindle drive. At this point I'd even accept running the axes with spindle inhibited, and using a manual speed control. Of course I'd rather integrate the new drive, but it seems most anything is better than a dead machine. I'd love some recommendations.