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metal drill bit

  1. Building & Construction
    i have a metal fire door on my shed and would like to put a deadbolt lock for extra security (live in a city). but i don't think i have seen metal cutting hole saw blades with 14-18 TPI, all i've see are wood ones. any ideas? thanks
  2. Building & Construction
    I recently purchased a new (huge) deck umbrella. The metal base only had 2 of thee 4 holes drilled to secure to the deck. When I tried to drill the 2 new holes, it could only make a dent in the metal. Is there a special drill bit for drilling metal? Thanks everyone!
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