Advice for punching out sink/tap hole

Discussion in 'Plumbers' Talk' started by Offshore, Jun 20, 2021.

  1. Offshore

    Offshore Member

    As per the title, does anyone have any special technique for punching out the tap aperture on a composite sink? It is a B&Q (Cooke & Lewis) composite sink with a partially cut knock out section. The instructions recommend using a hammer, punch and then a file. Just wondered if anyone had any pearls of wisdom before I (nervously) set about it. A gentle tap or a hefty blow?
  2. Max22

    Max22 New Member

    Give it a firm tap with a flat screwdriver and hammer, then keep tapping around the broken out area until hole is large enough

    be aware of where the slim hole area is, and the thick sink area
    Offshore likes this.
  3. Offshore

    Offshore Member

    Phew. Managed it relatively easily after all. Quite a leap of faith to take a hammer and punch to your brand new kitchen sink, especially when the Mrs is watching over your shoulder. Opted for a small centre punch which nibbled its way through the cut out section in no time at all. Finished it off with a rough tile file/rasp and job's a good 'un.

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