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Choosing the right Smartbit?

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  1. #1
    Apprentice (new member)
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    Default Choosing the right Smartbit?

    Hi All,

    I've been trolling this forum for quite some time whilst planning my 6mx8m deck. I am using 90x19 Merbau and hardwood joists with 10g x 50mm SS screws. I have been using a #10 Smartbit to pre-drill and countersink but after doing the first 12sqm and looking back over it I think the countersink is too deep. I presumed the #10 Smartbit was designed for 10g screws?

    I have searched the manufacturers website and they don't have any details on which Smartbit they reccomend for different size screws. I have also search these forums to no avail however I did see in "Terrys multi-level low level Deck step by step, work in progress" thread that he used a #8 Smartbit with the same screws I am using.

    Before I spend another $35 on another Smartbit can someone please confirm that the #8 Smartbit will be suitable for my screws/deck.

    Much appreciated.

    Paul
    img_0748.jpgimg_0754.jpg

  2. #2
    Senior Member
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    Default

    I've never seen the justification of paying so much for a 'smartbit' The screws are designed to be self-embedding. I just use a standard drill bit for a pilot hole, and a driver with a good torque.

  3. #3
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    Default

    ?? Doesn't the countersink from the smartbit stop (minimise)the heads of the screws from breaking off & also stop the wood from splitting?

  4. #4
    1K Club Member Godzilla73's Avatar
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    Default

    G'day,

    I haven't used a smart bit, but i used this when i did my place. Make it Snappy Countersinks You can get 'em at any specialist tool shop.

  5. #5
    4K Club Member ringtail's Avatar
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    Default

    I guess the theory of the smart bit is consistancy. Same depth countersink every time. Free handing it with the snappy product could produce a lot of variation. Totally agree with the countersink been too deep. Maybe someone does a adjustable version. As far as the self embedding goes, without counter sinking Ive found the screw just mushrooms the timber

  6. #6
    1K Club Member
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    Festool do an adjustable model, more expensive but quality is good

    there half way down the page
    Cordless drill T 12+3

  7. #7
    Apprentice (new member)
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    Default

    I'm now half way through doing the deck and still using the same smartbit. It is so quick and easy to use giving a perfectly consistent hole everytime - the only problem is that it is consistently too deep! I'm not going to change now as I have already done so much of the deck. I am concerned that water may pool in the countersunk holes and cause damage over time but I'll have to live with that - as for appearance it looks ok as every hole is consistent but I'm sure it will bug me for the first year or so as everytime I look at one of the 2500 screw I am going to ask myself "what if . . . ."

  8. #8
    Old Apprentice The Bleeder's Avatar
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    Default

    They may look a little too deep but I don't think that will be a problem (I think it looks good). As you said it will now be consistent over the whole deck.

    In years to come if the deck ever needs sanding you won't have any problem with screws being to high.

    Water pooling causing damage shouldn't occur if deck maintenance is followed and a good decking oil is used (just get plenty of oil in the holes).
    Steve

    Live while you're alive and sleep when you're dead

  9. #9
    Apprentice (new member)
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    Default

    Hi Steve,

    Thanks for your input. I had also had the same thought about sanding in the future being easy with my deep countersink.

    Cheers

    Paul

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