Booked tomorrow off work so hoping to spend some time on this now I've got some other projects out the way.

I've been looking at stepper drivers too. Think I'm going with the AM882/EM806. It looks like Aliexpress is the place to get them, just need to find a "reputable" seller... On the subject of buyign things, I can't seem to find the bloke in China who was the go to person for ballscrews etc? His eBay shop was something like "linearmotionbearings2008" ???