Re:
Update time.
As I’ve mentioned previously the GB Norma Stem was stuck fast in the steerer tube and no amount of force or lubrication was having an effect. So, after putting it off for a while, I decided to go down the 'cutting it out' route. The Stem had a nasty crack in it anyway, so I didn’t feel too guilty about cutting it up.
After removing the expander bolt I decided to cut it just below the swage line, figuring that the stem wall would be thinner from that point down, and it would still leave enough of the stem protruding from the forks to get a decent grip on.
Once that was done, I could remove the headset, then remove the forks from the frame and confirm that the frame number was "666".
I then proceeded to cut two opposite slots in the length of the remaining stem, being careful to keep checking my progress to avoid any chance of cutting into the steerer tube. I used a brand new hacksaw blade for each cut and was surpised at how easy and quick this process was. Once both cuts had been made, I gripped the piece of protruding stem with a self gripping wrench and gave it a twist. I was rewarded with a pleasing crack as the stem broke free and out it popped!
Considering how tightly the stem had seemed to be stuck, and after reading various online accounts of this method, I was really surprised at how well it worked, but now it's out the build can continue.
More updates as they happen.
Steve.