[Newbie] Lathe CNC - No Compound?

I wondered about this too. Thanks for the info.

Would a spacer made of a block of steel be better than aluminum due to thermal expansion and rigidity or does it matter?
 
Wouldn't think it would matter. First off, what amount of temp change would the block be subject to? Thermal expansion is figured in degree of change times a constant for the metal involved, Steel is .0000066, Aluminum is .00001 One inch thick aluminum would expand .0001 for every ten degrees of change, steel, .000066 for the same. The block of steel/aluminum on the top of the crossfeed isn't going to change all that much.
 
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