NMR tube holder (DAR group, mark 1)
thingiverse
My students and I needed an NMR tube holder, and buying one from a supplier was going to cost more than I thought it was worth... so I put together this design in Tinkercad and printed it out. 32-tube NMR tube rack, suitable for standard 5 mm NMR tubes. Initials are for my research group. 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 as the slicer. Printed on a raft to enable easy removal from the print bed, and support material only in the big rectangular windows — no supports are required for the circular holes.
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