Quote Originally Posted by Anttazz
Cheers guys,

I have a grinder that available so will give that a bash tomorrow and see how it goes. If that doesn't do it, i'll need to learn to suck less at welding.
Do you have a welder?

Then the welding idea is IMO best ...get a bit of flat bar drill a hole thru it to fit over the caphead, and possibly countersink the hole to it give extra depth for the weld... then puddle weld the cap head to the bar.