NMR tube holder (DAR group, mark 1)
thingiverse
My students and I required an NMR tube holder, but buying one from a supplier would cost more than I was willing to spend... so I created this design in Tinkercad and printed it out. This 32-tube NMR tube rack is perfect for standard 5 mm NMR tubes. My research group's initials are engraved on the rack. I printed my rack in white PLA on a Flashforge Creator Pro 2 with 0.4 mm layers, 5% infill (probably fine with 0%), 4 shell layers, print bed at 60 °C and nozzle at 205 °C. Simply3D was used as the slicer. The rack was printed on a raft to make removal from the print bed easy, and support material was only added in the big rectangular windows – no supports are required for the circular holes.
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