Cast aluminium gantry router

[Steel]

Hi all,
I'm starting a build thread for my machine and I'll see what you all think of it. I run a small aluminium foundry and a cnc router is something that'll be useful for making patterns for me.
I'm going to be casting a lot of the parts for it and I haven't seen another one like this on here so I hope you'll enjoy.
I've bought the rail, ballscrews and a 2.2kw spindle and VFD, here's the shopping list so far.

SBR20-300/600/1000mm linear slide guide shaft (6 fully-supported rails+12 SBR20UU bearing blocks)
Anti backlash RM1605-350/650/1050/1050mm-C7(4ballscrews+4ballnuts+4endmachinings)
4 sets BK/BF12 bearing end supports with locknuts and circlips
4 pcs 6.35mm*10mm(motor*RM1605) couplers

I got exactly the same kit for sale !!! you would of saved a few pounds lol
Casting alloy parts would work well, i was looking at casting my z axis assembly until i realized it would need machining to to get the finished parts !!
I cant wait to see this build take shape it will be pioneering at its best !!