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  1. #1
    Join Date
    Sep 2007
    Posts
    10

    3" Baltic Birch plywood disks

    I need baltic birch plywood disks in 3" diameter to stack together to make 6 posts of 20" long each with a center hole of 3/8". The number would depend on the thickness of the wood you use.

    To be shipped to 91206

    818-731-3485

    George



  2. #2
    Join Date
    Apr 2005
    Posts
    345
    Should the OD be left with the raw machine cut, so when you assemble and finish sand you don't have any chamfers left from deburring? What about porosity and voids in the plywood? Nice looking finished product. I will PM you..............
    http://www.scpconcepts.com

  3. #3
    Join Date
    Sep 2007
    Posts
    10
    Actually, the picture of the speaker is a sample. I was just trying to show what Im trying to accomplish with the stand.
    My speaker is this one



    I dont understand the first part of the question. As far as the voids, I dont care because Im only concerned about the sides of the wood, not the surface, since they are going to be stacked on top of each other.

  4. #4
    Join Date
    Mar 2003
    Posts
    35538
    He's talking about voids in the edges, not the face. Good Baltic Birch shouldn't really have any voids in the core plys, but cheap stuff might.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  5. #5
    Join Date
    Jul 2006
    Posts
    1256
    George,
    To bad to late.I had hundreds of different circles with 3/8 center holes from cutting baffles.After a few months we have to throw them out as they clutter the shop.
    Maybe next time.
    Larry
    L GALILEO THE EPOXY SURFACE PLATE IS FLAT

  6. #6
    Join Date
    Sep 2007
    Posts
    10
    Thats OK. It is too bad. Were they out of BB ply?

    BTW, I do not want any voids, since the whole look is gonna be from the plies.

  7. #7
    Join Date
    Jan 2004
    Posts
    668
    I've used BB a lot in my time as a patternmaker, wow that must wiegh a ton.

  8. #8
    Join Date
    Sep 2007
    Posts
    10
    They do weigh a lot. I can barely lift and carry one.
    But that is the idea!

  9. #9
    Join Date
    Jan 2004
    Posts
    105
    Still looking for quotes? Would you be willing to supply the plywood?

  10. #10
    Join Date
    Dec 2006
    Posts
    102
    Are you planning on marketing these? Reason I ask is are you prepared to handle the liability when one topples over and injures someone?

    Also, wouldn't it be easier to just veneer some PVC pipe for your stand?

  11. #11
    Join Date
    May 2008
    Posts
    2

    How many disks do you need?

    I have a cnc router with a 4x8 table, I could nest and cut many of these disks from a sheet of BB.

    Do you have an idea of how many you need?

    Thanks,
    Michael
    www.stcroixengineering.com

  12. #12
    Join Date
    Sep 2007
    Posts
    10
    it comes out to 162 out of 0.75"

  13. #13
    Join Date
    Sep 2007
    Posts
    10
    Similar speakers sell for $23,000 for a pair. I really dont think PVC will do it. Plus, Im using 3 columns for each speaker, not just one.

  14. #14
    Join Date
    Oct 2007
    Posts
    18
    Are you willing to go with a larger inner circle? That could decrease the weight some.

  15. #15
    Join Date
    Sep 2007
    Posts
    10
    well, that hole is there to pass a threaded rod through so that I can mount it to the base of the stand.

  16. #16
    Join Date
    May 2008
    Posts
    2
    I would love to make these for you. Send me the drawing file and I will shoot you a quote.
    [email protected].

    Thanks,
    Michael

  17. #17
    Join Date
    Sep 2007
    Posts
    10
    do you want it in Corel file?

  18. #18
    Join Date
    Dec 2006
    Posts
    102
    Quote Originally Posted by gmed View Post
    Similar speakers sell for $23,000 for a pair. I really dont think PVC will do it. Plus, Im using 3 columns for each speaker, not just one.
    Only $23,000? Cheap! :wink:*

    PVC covered with veneer and filled with cement for strength and weight.

    Know a bit about speakers.

    * Can't believe there's no wink in the smilies!

    WTF?

  19. #19
    Join Date
    Jan 2004
    Posts
    105
    Quote Originally Posted by 43220 View Post
    Only $23,000? Cheap! :wink:*

    PVC covered with veneer and filled with cement for strength and weight.

    Know a bit about speakers.

    * Can't believe there's no wink in the smilies!

    WTF?

  20. #20
    Join Date
    Sep 2007
    Posts
    10

    Wink

    Well the whole idea is to keep the theme the same, you know, laminated BB plywood, have everything look the same.

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