I'm imagining a homemade tool that's two sawzall hacksaw blades riveted in a parallelogram with their teeth out and sprung apart, so you can feed it down the post and it will saw two opposite grooves at the same time. More stable than trying to make pressure at the tip of the blade from way back at the handle.
And what could you do with a tap? As close as possible to the seat post size
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Genesis 49:16-17
Last edited by Darth Lefty; 03-09-17 at 11:36 AM.