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Improved ventilation T4 arm

Improved ventilation T4 arm

thingiverse

I encountered problems with the standard T4 arms and the suggested 3DR motors overheating. Observe the image - red PLA is evident. The design of ventilation holes in the bottom part of the motor seems to have changed since the original T4 was designed, so I drilled a few additional holes to ensure better airflow. Now I'm using slightly different motors, but with the new arms they remain cool even when running at 100% for an extended period - clamped down on my workbench.

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