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Roscoe writes: “I’ve seen this advertised several places but admittedly haven’t tried one yet.   It looks like a big time saver for installing Trex or other composite decking.  The fixed depth feature would make for a very neat installation and makes me think you might even be able to use it with a long bit extension and drill the holes standing up.”

What say you?  Do any of you have experience with these?

Smart-Bit Deck Countersink [Corporate Site]



3 Responses to Reader Find: Smart-Bit Deck Countersink

  1. Crusty Justy says:

    Ok i’m going to go ahead and tell the world that this already exists. This is nothing new. Infact all they are doing is trying to sell your their nonstandard size screws. I do finish carpentry and use countersinks all the time. With a generic countersink with collar stop you also have the option of using it as a full countersink where you can fill the hole with a plug afterwards.

    Lee Valley has some good sets, one of which i will ordering right away.


    Bare in mind though that these are not hex-shank but I also found these on the site as well
    ( http://www.leevalley.com/wood/page.aspx?c=1&p=40127&cat=1,180,42240,42281&ap=1 ) and I just emailed to see if you can use their collar stops on them also.

    BTW i love this site and I’m only 23! (and a tool addict)

  2. TL says:

    When installing Trex (or other solid composite decking), I’ve found it easier to use composite decking screws so I don’t have to do any pre-drilling. Composite decking screws have a corse wood-screw type thread for the first 2/3 (to dig into your joists), then a finer thread at the top. Their head is flat on the bottom which forces the shavings down to avoid the “mushroom” effect you get with regular wood screws used on composite decking. They cost a bit more, but can also be had in colors which match the comon Trex colors.

  3. Dave Hayward says:

    Buy these bits by the case, they snap very easily

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