Blimey - that's done it. Over the last month alone there have been several discussions about finishes, and there is no one size fits all solution.
Here are two of those discussions you might want to look at, and you can bet your bottom dollar this will yield yet more diverse opinions.
http://www.penturners.co.uk/tools-equipment-accessories/12004-friction-polish-finish.html
http://www.penturners.co.uk/turning-pens/11918-alternative-ca.html
The go-to options seem to be friction polish (which in my view is wholly unsuitable for a pen) and CA. My preferred method is a liquid melamine lacquer, but there are also a number of proprietary products available which seem to be gaining ground.
Walter Hall is too much of a gentleman to ever mention it, but he is the author of a leading book on penturning, which covers finishing in some depth.
The Complete Guide to Turning Pens & Pencils. Taunton Press ISBN 978-1-60085-365-4
