Quote:
Originally Posted by FriarQuade
Carbide in hand tools is asking for trouble. It's a great material for cutting tools but if everything isn't locked down it's pretty unforgiving and you'll be snapping your $50 drill bit in the blink of an eye. Titanium doesn't require carbide by any means, especially for just a couple holes. A center drill is perfect for holes in round tubes.
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Yep, I'd go with cobalt (M42). Titanium work hardens, so try not to let the drill dwell.