Changing from 1.8 degree motors to 0.9 degree - what to change?

This is a trivial question, and I think I know the answers, but I'd like some reassurance/guidance... I am about to change the X-Y motors on my CoreXY printer from 1.8 degree ones to 0.9 degree ones, and I know I'll have to change the config.g file.

First, I presume that the steps-per-millimetre value will have to be doubled for those motors. I'm not sure what else will need to be changed - the motors are of similar current value and of the same physical size, so the driving current should be much the same - shouldn't it?

Is there anything else I need to think about?

The only other thing you may need to think about is that if you use 12V power then the travel speed may be restricted. See [duet3d.com].

---

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

I have seen it suggested that you use a 24v power supply with those motors to get the max torque from them. Hopefully you are already using 24v or were planning on upgrading.

Already on 24v.

Thanks for the info - good to know that it's a straight swap with just a little reconfiguration.