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nterested in trying this too.
Debating best place to drill, i.e. front / side / back and also would doing the same on a carbon post be certain death...Don’t do carbon! Or cnc’d alloy or titanium. We had Parlee make us a custom seatpost once for rear lights. I think it was a drilled normal Parlee post that they then added some structure to?
The easiest post to do this to is a Thomson. You just have to drill thru the cradle and route it up the hollow seatpost. Make sure that you counter sink the hole thru the cradle and de-burr it.
Project: