Got three and I'm off to buy some ammonia tomorrow.
Saw (if you'll forgive the pun) your tool on another thread Rampage, very impressive!
Might have to cajole you into making one to sell (as I'm in Brighton) if I get to the point where there's no option but to destroy the post(s).
I have been asked by someone else to knock up a blade holder, if you want one let me know.
I have seen a boring tool used, the bloke got a mag drill cutter thing, he bodged a mandrel to hold it in his faithfull battery drill, then he bored the remains of the seat post with the closest size cutter he had, say a 27mm cutter in a 27.2mm post. The remains of the post collapses easy enough once it's thin, I wouldn't be surprised if it started spinning in the tube while your boring it out.
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