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![through hole - Round female pin header vs square female pin header - Electrical Engineering Stack Exchange through hole - Round female pin header vs square female pin header - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/lXhyd.jpg)
through hole - Round female pin header vs square female pin header - Electrical Engineering Stack Exchange
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![What's the best way to solder larger through-hole pins? For larger pins like on terminal blocks, heat never distributes evenly and the solder looks chunky and chalky. I tried using flux, but What's the best way to solder larger through-hole pins? For larger pins like on terminal blocks, heat never distributes evenly and the solder looks chunky and chalky. I tried using flux, but](https://i.redd.it/whats-the-best-way-to-solder-larger-through-hole-pins-for-v0-zj3ixrct1k0a1.jpg?width=3024&format=pjpg&auto=webp&s=ee381696ef2e8f5cacea62a974aeede586d997b6)