Step 4: Drill a hole for the new filter faucet

Drilling a hole for the filter faucet
Photo: Kolin Smith
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Measure and mark the hole location for the filter's faucet on the stainless steel sink deck.

For a cast-iron sink, locate the hole on the countertop or mount the filter's faucet in the sprayer hole.

Drill a ½-inch-diameter hole through the stainless steel deck with a step drill. Each graduated step on the bit is 1/8 inch wider in diameter than the previous step.

Tip: To keep the drill from "walking" on stainless steel at teh start, cover the location with a strip of masking tape or strike a starting point with a center punch.
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    Tools List

    • drill
      Drill/driver with step-drill bit,
      to drill hole in sink top
    • propane torch
      Propane torch
    • emery cloth
      Emery cloth,
      for cleaning pipe prior to soldering
    • adjustable wrench
      Adjustable wrench
    • tongue-and-groove pliers
      Tongue-and-groove pliers
    • tubing cutter
      Close-quarters tubing cutter
    • basin wrench
      Basin wrench,
      to tighten hex nut that holds filter faucet to sink top
    • copper fitting brush
      Copper fitting brush (for cleaning copper tubing and fittings
    • 16-foot tape measure
      Tape measure
    • eye goggles
      Eye goggles
    • centering punch
      Center punch,
      to strike a starting point on stainless steel sink deck prior to drilling

    Shopping List

    1. WATER FILTER KIT

    2. LEAD-FREE SOLDER AND PIPE FLUX

    3. 1/2-INCH COPPER TEE

    4. SEVERAL FEET OF 1/2-INCH COPPER TUBING

    5. 1/2-INCH FEMALE ADAPTER

    6. 1/2-INCH TO 1/4-INCH REDUCER

    7. 1/2-INCH BALL VALVE

    8. TEFLON TAPE

    applied to reducer before threading onto female adapter



    9. TARP OR BLANKET

    to protect kitchen floor



    10. FIRE-RESISTANT CLOTH AND FIRE EXTINGUISHER