Reducing the butting in a head tube

I'd build it.

How about a pic of the head tube, would be interested to see it now...

That's a real shame. I'm sure you've got exciting things in the works.
I'll have a look elsewhere in a while I guess. Any idea if its likely I can take a bike in somewhere and have bottle bosses done without having to A) take parts off the frame B) Leave the bike there overnight? Its my only bike

Whats wrong with the bottle bosses? Does it have any?

Nope, its some kind of prototype frame from Genesis c~2011. Not sure what exactly they were testing out in designing it but theres no bottle bosses. Mudguard bosses on the frame but not forks

Loving this hack for installing riv nuts for bottle cage bosses. Just drill some holes in your frame in the right spot, then use an old hub and quick release to stick some riv nuts in. Job done.

https://barndoorcycling.wordpress.com/2012/09/12/installing-a-bottle-cage-bosses-using-riv-nuts/

Yeah I know the trick, this frame fits me well and I'd like to keep it for a number of years. I'd quite like it all brazed and neat.
Thanks though

Most modern frames do not have brazed in fittings, but have rivnuts or if you are not a merkin, nutserts is the usual british nomenclature.

These are permanent, neat , cost effective , simple to fit, do not damage the paintwork or the temper of the steel. What is not to like.

Here is a steel nutsert in stainless steel, most nutserts in bike frames are aluminium, less pull up force required which helps on thinner material.

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Thank you, I know what rivnuts are

That's not really true, particularly on 'modern' steel tube sets. In the centre of the tube, outside the butts wall thickness can be as thin as 0.35mm, so the boss becomes a reinforcement of the hole, not just something to thread into. Mass produced ally frames do tend to have rivnuts, but this is due to thicker walls allowing them to get away with it, not because it is better, or even as good.