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Thread: How to Make 20mm hole in a Sponge?

  1. #1
    DIYFK member H]-[H's Avatar

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    May 2014
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    How to Make 20mm hole in a Sponge?

    As per title, what is the best way to make a hole through a sponge?
    Preferably one that makes a nice smooth hole..
    I've attached a pic for reference..

    *The hole in the pic looks distorted because there's water flowing out of the pipe where the sponge is attached..
    Attached Thumbnails Attached Thumbnails 1.jpg  

  2. #2
    DIYFK member Meep's Avatar

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    Oct 2013
    Planet Earth
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    Take a piece of wood, with say a 25mm hole drilled in it, compress the sponge flat on a hard surface using that piece of wood, then punch the hole into the compressed sponge though the hole in the wood with a circular punch and hammer or press...

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