Additive manufacturing
such as three-dimensional (3D)-printing
has revolutionized the fast and low-cost fabrication of otherwise
expensive NMR parts. High-resolution solid-state NMR spectroscopy
demands rotating the sample at a specific angle (54.74°) inside
a pneumatic turbine, which must be designed to achieve stable and
high spinning speeds without mechanical friction. Moreover, instability
of the sample rotation often leads to crashes, resulting in costly
repairs. Producing these intricate parts requires traditional machining,
which is time-consuming, costly, and relies on specialized labor.
Herein, we show that 3D-printing can be used to fabricate the sample
holder housing (stator) in one shot, while the radiofrequency (RF)
solenoid was constructed using conventional materials available in
electronics stores. The 3D-printed stator, equipped with a homemade
RF coil, showed remarkable spinning stability, yielding high-quality
NMR data. At a cost below 5 €, the 3D-printed stator represents
a cost reduction of over 99% compared to repaired commercial stators,
illustrating the potential of 3D-printing for mass-producing affordable
magic-angle spinning stators.