LEGO 9V motor spindle
thingiverse
I'm upgrading the standard issue LEGO motor spindle to a premium 9V model. Two models are available: v2 boasts impressive fine details and accuracy, while v1 might yield better print results. This design is an older creation of mine, predating my understanding that holes often shrink during printing, so you'll need to enlarge the hole with a 2mm drill bit to ensure proper fitment.
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