Simple Machine (help and advice needed)

[Gregor]

Hi All
I have spent most off the day thinking about this build and also been reading the build logs and I have had a go at a machine using timing belt and pulleys which would give me nearly the same working area as the first machine but the outer dimensions would be reduced.I have used 60mmx60mm box and underneath I have used 6mm plate. Because I am using 60mm box how would I fit the stepper motor as the shaft would not be long enough to go through the box and would I just get the ballscrew end machined to the acquired length to go through the box .Here's some pics the base might not be strong enough. All Advice most welcome.
Cheers