NAB tape reel hub
grabcad
NAB hub for 1/4" magnetic recording tape reel, per dimensions indicated in NAB Engineering Handbook (4th Edition) NARTB Recording and Reproducing Standards.Includes solid model with no edge treatments for machining and skeletonized fully-modeled version for FDM printing.Source document for dimensions: https://worldradiohistory.com/Archive-NAB-Engineering/NAB-4th-Edition/Audio%20Recording--NAB-Engineering-4th-Edition.pdf
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