Bill, thanks for your kind words. I¡¯m sure you are doing far better than you think you are! ?Life long learning eh??
Lovely graphic Mike, and I¡¯m sure it would be an improvement but I don¡¯t have the skill or the facilities to make it :-)
JHM, thanks for the link to the ME post.
Thanks all for the replies and suggestions. I will use the ¡®thin tool removing waste¡¯ technique first. My tiny parting tool won¡¯t fit into the space (it is in a holder which fouls the front of the tool post as the pulley blank is so large) so I¡¯ll shape and sharpen a 3mm tool blank.
Most importantly though I¡¯ll draw the thing out at a 10x scale and try to rig up indicators to guide me. And yes, a round file may come in useful¡
One query - when you say ¡®slow speed¡¯ what rpm would be appropriate for a 38mm diameter in aluminium? (I have yet to get my head around feet per second etc).
