"I need to say that I have had an ELS for quite a few years and have never crashed it yet!Richard"Unlike Richard, who is an outstanding machinist and whose level of expertise I shall never come close to achieving, I
have crashed my RELS system once. It was 100% my fault, not the system's. The point I want to make is that I use a NEMA 23 stepper with 3.0 Nm holding torque on both the Z and X axes. When I incorrectly drove the cutting tool straight into the part with the cross-slide at relatively high speed, my X-axis stepper never stalled. I managed to hit the Emergency Stop button, which on my mini-lathe disables the mains power, before any? damage was done. The stepper motor torque was sufficient that it spun my QCTP about 30 degrees around its M12 (or is it M10? I can't remember) mounting bolt. I can't imagine what kind of damage a 12 Nm stepper could cause!
I view the stepper motor partly as a kind of mechanical fuse, and prefer that it stall rather than cause more permanent damage.
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Regards,
Charlie
New Jersey, USA
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ANTHONY¡¯S LAW OF THE WORKSHOP: Any tool, when dropped, will roll into the least accessible corner of the workshop.
THE LINDO COROLLARY: If you have cats, they will promptly hide the tool.
