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    ? about mdf ( box pics)

    when screwing or nailing the boards together is it normal for it to split a little?

    any way the pics here are the pics of the finished box. 1 cube @32htz

    it is for 2 8"s that i bought off of brtnboarder notin spectacular. just for use in my room on a old receiver. right now i have it hooked up to a crunch running 140wx2 running off of a deka 60

    credits to fargof for designing the box

    uploading pics.





    thats only good size pic all the other ones dont want to resize.

    messy room ftl
    Last edited by silvercookie; 03-20-2008 at 11:47 AM.



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    Re: ? about mdf

    pre-drill and no nails. wood should not split



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    Re: ? about mdf

    I always use a 1/16 drill bit to pre-drill with, and then follow it up with something to countersink the screw heads. Without a doubt the best kind of nail/screw I have ever used are 1.25" coarse thread drywall screws. The thread is spaced out much further and really grips the MDF well, as opposed to other screws that tend to shred the mdf apart after screwing and unscrewing several times...then you end up stripping the hole.



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    Re: ? about mdf

    Quote Originally Posted by RyanM923 View Post
    I always use a 1/16 drill bit to pre-drill with, and then follow it up with something to countersink the screw heads. Without a doubt the best kind of nail/screw I have ever used are 1.25" coarse thread drywall screws. The thread is spaced out much further and really grips the MDF well, as opposed to other screws that tend to shred the mdf apart after screwing and unscrewing several times...then you end up stripping the hole.
    Use a larger diameter




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    Re: ? about mdf

    just like everyone else stated, you must pre-drill. And I agree on the 1.25 corse thread drywall fasteners.



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    Re: ? about mdf

    Quote Originally Posted by PV Audio View Post
    Use a larger diameter
    I don't need to I never have my MDF split when I predrill with a 1/16 bit.

    What size do you normally use, 1/8?



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    Re: ? about mdf

    I agree per-drill is the best to avoid this.I also put a dab of wood glue in the hole just prior to screwing it down.This will squeeze out through any little hairline cracks that maybe in the wood.




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    Re: ? about mdf

    Quote Originally Posted by audioarsonal View Post
    I agree per-drill is the best to avoid this.I also put a dab of wood glue in the hole just prior to screwing it down.This will squeeze out through any little hairline cracks that maybe in the wood.
    What do you use for adhesive on the rest of the box?



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    Re: ? about mdf

    #6 Countersink bit


    Plus #6 sheet metal screws.

    Screwing vs. nailing. I like screwing




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    Re: ? about mdf

    I only use TBII for my adhesive.The dab is just a little insurance I guess.Not really manditory, but if you try it some time you will see what I'm talking about.




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    Re: ? about mdf

    Quote Originally Posted by audioarsonal View Post
    I only use TBII for my adhesive.The dab is just a little insurance I guess.Not really manditory, but if you try it some time you will see what I'm talking about.
    I'll have to try that some time. I use construction grade subfloor adhesive for all of my joints, and it's stronger than anything I've tried before...and I get it for free also



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    Re: ? about mdf

    Quote Originally Posted by Dingleberry View Post
    #6 Countersink bit


    Plus #6 sheet metal screws.

    Screwing vs. nailing. I like screwing
    That counter sink is the best...As for sheet "metal" screws???I would stick with 1 1/4 corse thread drywall.Inexpensive and do a better job IMO.




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    Re: ? about mdf

    Quote Originally Posted by audioarsonal View Post
    As for sheet "metal" screws???I would stick with 1 1/4 corse thread drywall.Inexpensive and do a better job IMO.
    x2

    They definitely make mounting holes last longer than any other screw I have used.



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    Re: ? about mdf

    i was just wondering cause i pre-drilled and then when i put the screws in it split a little bit

    i predrilled with 3/32 and used i think it was #6 sheet metal screws. i used 3/4 mdf

    i think the screws were a little long though.

    pics will be in first post.



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    Re: ? about mdf

    Quote Originally Posted by silvercookie View Post
    i think the screws were a little long though.

    pics will be in first post.
    I used to use 2-2.5" screws when I first started doing boxes and found out shortly that it was just a hassle and unnecessary to use screws that long. The 1.25" coarse thread drywall screws are just the right length and have an insane amount of grip.



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