Luke11CNC Build Log ,I'm so naïve

[Jonathan]

I have received the following Items

8 SC20UU x 4 pcs Linear Ball Bearing these are for y,z axis
4 SK20 Shaft Support ID20mm Samic

You're not using supported rails then

and I have ordered the following

three stepper mount for the above stepper motors from Jonathan Thank you Jonathan
Ball screw support ordered again from Jonathan
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Will be ready by tomorrow...

RM1605-1100mm with ballnut and end mached+ a set BK/BF12+1pc Coupler 8mm*10mm(8mm is for motor shaft) SBR25-1100mm(2supported rails and 12 bearing blocks)

12 bearing blocks!! That seems a bit extreme for two rails. I wonder how much difference it would make if you used more than two blocks per rail...

Anyway, centre height of the BK12 block is 25mm and total height of the SBR25 rail and block is 60mm. That means I need to make the centre height of the ballnut mount 60mm-25mm=35mm. Do you agree?