New cnc router build looming, advice needed

[Mad Professor]

Good day all.

At the end of 2010, I started designing and building my 1st CNC router, see here for post: http://www.mycncuk.com/forums/diy-ma...gn-advice.html
Back then I only wanted a small desktop unit for making PCB's and doing work with plasic.

But as always I was finding that I needed to do more and more stuff with it, so at the start of this year I upgraded the Z-Axis, see here for post: http://www.mycncuk.com/forums/diy-ma...gn-advice.html

And once again, I am finding that I now need to cut bigger parts, and need to cut aluminium.

So I am now looking at building a new DIY CNC Router.

Here is the basic design of what I am looking at doing.

***** X-Axis *****
2x Ballscrew RM1610-1000mm
2x SBR25-1000mm Rails
4x SBR25LUU Bearing Blocks
1x 752 Stepper Driver
1x M60STH88-3008DF Stepper Motor

***** Y-Axis *****
1x Ballscrew RM1605-600
2X SBR20-600mm Rails
4x SBR20UU Bearing Blocks
1x 752 Stepper Driver
1x M60STH88-3008DF Stepper Motor
2x 24 Tooth HTD5-15 Pulleys
1x 54 Tooth HTD5-15 Belt

***** Z-Axis *****
1x Ballscrew RM1605-
2x SBR20-400mm Rails
4x SBR20UU Bearing Blocks
1x 752 Stepper Driver
1x M60STH88-3008DF Stepper Motor
2x 24 Tooth HTD5-15 Pulleys
1x 59 Tooth HTD5-15 Belt

***** Extras *****
Ethernet SmoothStepper (Rev 1.0)
42Volt PowerSupply (Due to be upgraded)
2.2Kw Water Cooled Spindle & VFD

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I am looking to make the main base frame from 80x80mm steel box section.

This is still very much work in progress, so any advice or input would be grate.

Thanks for your time.

Best Regards.