Originally Posted by
MarshMan
I plan to have a dedicated laptop, Dell D600, for my CNC set up.
Planning to use Keling steppers KL23H284-35-4B 387 oz-in on my 7x12 lathe as suggested elsewhere.
From a suggestion, I have the choice of going with g251's w/BOB or g540
My question is, if I go with 2 g251's and a BOB is needed, I assume I will need a smooth stepper board, being I have a laptop?....OR can I be OK to use the g540 being it has a BOB?
Will be using Mach3
Thanks!
You may experience the same problem I had with my lathe conversion. The lower voltage required by the G251 may not deliver enough speed for threading operations.
I used G203V's which thankfully allowed me to use Kellings 72 volt power supply. I was running Kellings KL23H286-20-08b steppers at 495 oz-in. I have never regretted "over engineering" the little lathe and it has always delivered after the voltage boost.
I am using the G251's on a router with only one small glitch which I expect to have worked out soon. The lower rotational speed isn't as crucial in this application.
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