Need a perfect 8mm hole - to ream or bore?

[HankMcSpank]

A bad photo here...



here's the boring bar I bought...

http://cgi.ebay.co.uk/ws/eBayISAPI.d...EOIBSA:GB:1123 (you can enlarge their advert piccie a bit by clicking on it)

Re being sharp - hard for me to say, it was brand new out of its holder tonight?

I had a look at the video - big difference to my boring bar - which flexes - also I note he takes the tool in, and then cuts as he retracts - I noticed myself that the boring bar seemed to cut better on the return leg - what gives?

Anyway, I'm gutted ...yeah, yeah I should have practised first, but for chrissake - it's an 8mm hole, & there was nothing in the manual about it taking me all night & still screwing it up! (& I'm not sure it can be rescued as the first 5mm depth into the hole is greater than 8mm now (I can feel another Popeye sawing session coming on)

I'm gonna take up stamp collecting.