Halbach Array Holder for NMR Spectrometer - Remix for K&J Magnets

A remix of http://www.thingiverse.com/thing:942257 designed to fit off-the-shelf magnets available from K&J Magnetics. In particular, to fit the radially-aligned BX066 1" x 3/8" x 3/8" N42 magnets. These magnets gave a center field of ~0.4 T.

Magnet holes have been shrunk to create very tight tolerances for the magnets to stop them from rotating, and I created a placement for a center magnet. In making past Halbachs, I found it much easier to insert and align outer magnets if a center magnet was in place aligned with the final field. I also expanded the NMR sample holder and included an *.stl with supports already included.

Have not yet printed and tested, although am planning on it soon.