On 07/03/2013 21:46, Danny D. wrote:
What's the trick to drilling a hole through 1/2" thick stainless steel?

From my guardrail experience, I had bought titanium coated drill bits.

So I thought it would be easy to drill a hole in a stainless steel can
opener (for hanging on a loop outside by the BBQ cooler).

Nope!

I can't make a dent!
http://www5.picturepush.com/photo/a/...g/12362068.jpg

What's the trick to drilling through stainless steel?


This is a piece of Pee.....

I was drilling stainless steel today. 20 holes exactly in 3mm think 304
Stainless steel.

You need cobalt drills. Screwfix do a set for 35 quid upwards

You *MUST* use a slow speed

You *MUST* use a cutting fluid

If you don't drill slow and use cutting fluid, the drill bit glows red
hot at the tip and the stianless steel literally hardens under the drill
bit.