What the thread found

• Drilling a hole directly through a carbon fiber post risks creating stress concentrations that can enlarge over time, especially under load from camera equipment.
• Adding an internal reinforcement sleeve made from aluminum and epoxied inside the post before drilling can prevent the hole from spreading and maintain structural integrity.
• Sealing the edges of drilled holes with carbon fiber epoxy prevents fiber fraying at the hole perimeter.
• Alternative approaches include routing cables externally along the post, using a spacer plate at the top or bottom of the post with milled slots for cable routing, or adding extra conductors to an existing multi-pin cable connector to avoid drilling altogether.
• An aluminum spacer sandwiched between the post and connection point can provide cable egress without compromising the post itself, and can be designed with a flared base for stability.

Depends on

• The risk of hole enlargement was observed in a specific case involving a safety pin under camera load, which may not directly apply to static cable routing.
• Some solutions mentioned were developed for specific rig configurations and may require custom fabrication.
• The effectiveness of sealing techniques with epoxy was not conclusively validated in the discussion.
• No testing data provided for various cable routing methods under typical field conditions.

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