GH1440 Lathe Bed Conversion

[Valfar]

Thank you m_c! It does make sense, and I've also found some spreadsheets for calculating stepper torque values. I also believe they are a good start before deciding to buy.

Also, an excellent tutorial (from my point of view) can be found bellow:
http://www.mycncuk.com/threads/1524-...otor-do-I-need

But now Hanermo2 wrote:

My experiences, working at this for 10+ years.
Steppers are no-where near accurate enough.
Even the best belt drives are not accurate enough.

Now from my understanding that means stepper motors driven by belts are not accurate enough (what's the exact value of this? 10 thou? 100?), and the way to go would be either a worm gear or a gear box. But the problem with these is the backlash they introduce, and a good quality one is out of the question for a DIY budget. Is that correct?

That leads me to believe is the belt itself causing the problems, being flexible, and not the stepper. Is that correct?

And of course, a brake system applied on the C axis would work, but that means the same issues are encountered on the other axis (XYZ) as well?

Getting the required torque.

I understand the torque value, but this contradicts with the high RPM value needed for the lathe operations?

Cheers!