Well, not a lot to say really.. I was getting fed up with the dull office seat i had. Even though it was ridiculously expensive (although swiped from work) it wasn't quite 'right'
30 minutes of bidding on ebay, 20 minutes of drilling, a lot of angle grinding and a little cutting later I have this..
I have used the complete frame, arms and bottom end of the office seat, retaining ALL original adjustments and now have something cooler!!
The seat has 4 way adjustability (8 if you include both directions on the same axis like car manufacturers seem to)
(sorry about the crappy pic, its from the phone then enlarged....)