There is a chapter on them in 'Turning Pens and Pencils' by Christensen & Burningham, which was first published in 1999, so they must go that far back....and beyond.
They go back a lot more than that Ed and they were almost £7 each
There is a chapter on them in 'Turning Pens and Pencils' by Christensen & Burningham, which was first published in 1999, so they must go that far back....and beyond.
Nice one Woody i was told you used to get stepped drill bit also is that correct.
Yes that is correct. I saw one once, not sure when but I think it was in the British Museum.