My DIY CNC - Z-axis
I plan it something like this. Using 20x150mm plates and the same Bosh Rexroth 25mm rails as on the rest.
Next I have to make the rest of the screw holes… and the ballscrews - not long before the CNC hardware design is ready.
I like your design. Looks solid. Have seen nothing of your leadscrews yet. Seems little room for that to me. Any thoughts on that yet?
Screws next 
I have planned where to install the Z and X screws, but have not decided if I should install the y-screws on the top or on the sides of the 90x90mm profiles.
I do not think space is a problem.
The y-profiles is 90x90mm
Rails 25mm - in this image you find rails/blocks compared to a 0.5L can.
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Started on the details on the z-axis
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the other side
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Some updates on my z-axis
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one more
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