Results 1 to 8 of 8

Thread: mdf

  1. #1
    Bob Wiggins is offline Former Member (by the member's request)
    Join Date
    Feb 2007
    Location
    140 miles west of tulsa
    Posts
    125

    mdf

    In doing a search for assembly techniques (a box as an example) of mdf on this forum I find none. I did find on google screws aren't recommended because of de-lamination. Would someone point me in that direction.
    Last edited by Bob Wiggins; 08-04-2008 at 09:48 PM.

  2. #2
    Join Date
    May 2007
    Location
    Kansas City, Missouri
    Posts
    13,443
    I've either glue and nail with 18 gauge brads or screw. I do use a dewalt drill/counter sink bit when screwing mdf. Drilling the pilot hole prevents it from splitting.
    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  3. #3
    Join Date
    Dec 2006
    Location
    Portland, OR
    Posts
    140
    Bob, you certainly can use screws in mdf, but, you will want to look into the Conformat system and screws. Imparitive that you predrill using their step drill bit...

    Good glue is your friend.

  4. #4
    Join Date
    Apr 2007
    Location
    No, not all of SoCal is Los Angeles!
    Posts
    9,076
    I rabbet, glue (and screw or brad depending on the expected stress) following the guidelines for screwing MDF I have never had a problem. Use straight shaft screws (as opposed to traditional wood screws), drill the pilot hole the diameter of the screw shaft so that only the threads cut into the MDF, drill the hole a bit deeper than required (that is, never force the screw into the MDF like a wedge, it will fail). I use TB-I or II and have a rolling work cabinet/table that has been abused for 3 years and the drawers still move freely and the joints show no sign of fatigue.
    Any sufficiently advanced technology is indistinguishable from magic.
    - Arthur C. Clarke

  5. #5
    Join Date
    Sep 2007
    Location
    Plainwell, Michigan
    Posts
    4,857
    My son has a audio business and build sub boxes out of mdf all the time. Glued and screwed. all screws are pre drilled. One box in particular holds a stereo that pushes 158db at the last sound show in Detroit. So Glue and screws hold up real well.

    Tom

  6. #6
    Join Date
    May 2007
    Location
    Kansas City, Missouri
    Posts
    13,443
    You can actually drill and tap MDF as well, just don't overtighten. I built a cnc router table in which the framing, all the motors and the router are bolted down by simply tapping the mdf.

    http://picasaweb.google.com/libertys...CRouterProject
    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  7. #7
    Join Date
    Feb 2007
    Location
    Westphalia, Michigan
    Posts
    955
    One thing I didn't see mentioned is to stay as centered as possible. Don't put a screw near the edge. Even with pre-drilling there is a higher risk of having a delamination. (I hate it when that happens)

  8. #8
    Join Date
    Feb 2008
    Location
    Cedar Park, TX
    Posts
    320
    I've used both the sheetrock type screws and regular wood screws by drilling a pilot hole then adding a drop or to of CA glue into the hole just prior to driving each screw. Drilling, then running the screw into the hole causes the MDF to powder and the CA glue mixes with the powder then hardens around the screw.

    Stay away from screwing into edges, if you can, and if you can't drill a little larger pilot hole.
    Jerry

    http://www.sawdustersplace.com

    "If politics wasn't built on careful deception it wouldn't need its own word and techniques. It would just be called honesty, education, and leadership."
    Bob "Phydeaux" Stewart one day on Woodnet

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •