Drilling through headtube to add Brompton luggage block?

Hello,

Before resorting to the ugly “jubilee clip” solution…

… I was wondering if someone bold enough tried to drill through the head tube to accomodate a Brompton luggage block :

Thank you.

You wrote at bikeforums.net;

And a bit later you published above question…

  • how does that match, are you just kidding or what?

Once again:

Do not attempt to drill ANY additional hole into the Strida frame tubes!

I advice that after over eight years of intensively studying Strida technics - jfyi.
You have been warned.

Ok.

Alternatively, what about having a lug soldered by a professional?