Prusa v2 - aluminum plate question

I'm trying to build a prusa v2, but I'm a little confused on the build plate. The hardware kit I have has an aluminum plate, a mk2a heatbed, and glass. The aluminum plate has holes similar to [compare.ebay.com] and I dont know what to do with them. It seems like they arent positioned for 4 linear bearings? I'd love some advice. Is there a way to use that plate, skip that plate, or should I have new holes made?

Thanks,
Laura

The plate is expecting you to use 3 linear bearings, two on one side, one on the other. In this case, less is more because...
* Three linear bearings means less friction in your y-movement.
* It's easier to calibrate three points into a flat plane than four.
* Spare linear bearing. (Use the smoothest bearings, and don't use the others.)

I went from the Wiki's two-plate solution to a single plate like you've got. The photos there might be instructive, if the text above isn't clear. [plus.google.com]

Edited 1 time(s). Last edit at 06/10/2013 04:50PM by Karmavore.