3/4" taper pin reamer

[The Pirate]

I made a 'D bit' out of HSS - turned out of soft M2 - hardened and ground.
That was for Nich Bailey's Aveling RL for fixing the weighshaft arms.
It was at least 8" long and 3/4" or so in diameter.
It worked perfectly - it went with the bits I did down to Dingles. Might be worth asking Nich about it, as he probably still has it.