On 22/09/2013 04:56, Tony Bryer wrote:
On Sat, 21 Sep 2013 19:51:15 +0100 Andy Burns wrote :
At some point in the next week or two, I'll want to drill and tap a
dozen holes into stainless steel tube, this is 2mm wall thickness,
42mm diameter handrail, I'll have a 100-200mm offcut to practice on.

Would threaded pop rivets be suitable? e.g.
http://www.poprivet.co.uk/productran...t=m5fro_s_s_39


Taptite screws would be better IMO.
They are shaped to roll a thread into thin sheets as you screw them in.
they don't cut the metal like self tapers do.