[chbot] Question regarding stepper motors

[Michael Dawson]

I am trying to calibrate the A4988 drivers for the stepper motors for my 
laser engraver/cutter, using Arduino Uno and the CNC shield, (because 
the one that came with the cutter was pirated software and didn't work 
how it was supposed to and I want to run laserGRBL anyway).

The issue I am having is, I have not got the specs for the stepper 
motors and aliexpress did not provide the specs.

I think they are nema17, but the only hint I have to that is that when I 
search on the number etched into the motors D42HSC141B-24 I find an old 
banggood ad saying they are nema17 but if you click on the link the 
original ad is long gone.

I currently have them set to 0.952v when measured connected to the 
arduino and cnc shield which is what was suggested, if they were rated 
to 1.7A. I'm hoping that is correct for these steppers, so I guess my 
question is does anybody have these same steppers and know the specs, or 
do they know it they are indeed rated to 1.7A

Or is there a way to find the Amp rating other than the etching on the 
side of the stepper?

Any help would be much appreciated.

Oh hi BTW, my name is Michael, one or two of you may know me, I ran Red 
Dwarf BBS back in the day, (I just remembered, I had the Red Dwarf logo 
display in RIP script when you logged in, pity that never really took off.)

Michael