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Why not using OSB panel instead of MDF as spoiler board?

Discussion in 'CNC Mills/Routers' started by laurent Besseas, Jun 24, 2020.

  1. laurent Besseas

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    Hello, I'm wondering why most of the CNC build used MDF instead of OSB board.
    OSB is stiffer & a bit cheaper (at least in europe) and lot more green.
    Thanks
     
  2. Rob Taylor

    Rob Taylor Master
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    OSB is cheaper here too, but MDF is flatter, more uniform for cutting into, and better helps absorb vibration than a more rigid material.
     
  3. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Although MDF is better, OSB/Ply works fine too. Just remember to run a surfacing job on it. For the price difference around here, I can get Shutterply (lower quality ply) for about half the price of MDF of the same thickness, so instead I can bump up to the 25mm or 32mm sheet (instead of 19mm) and still save money. I use mine as a proper spoilboard (screw stock down into it, cut through etc) so cheaper means less guilt when it comes time to replace it (about once a year or more)

    upload_2020-6-24_21-28-28.png
     
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  4. Rob Taylor

    Rob Taylor Master
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    Yeah. If I were doing a "real" spoilboard, I'd seriously consider going the route of plasma cutters and using a whole bunch of 2x4 studs mounted vertically. Dirt cheap, relatively low on knots, easy to screw into, can add T-nuts for repeatable fixturing, can individually replace them, etc.
     
  5. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Good idea too!
     
  6. Kevon Ritter

    Kevon Ritter Veteran
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    MDF is consistent. MDF is probably the most consistent disposable material ever made. MDF can also be used for a pass through vacuum table if you go with the lighter variant.
     
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  7. Giarc

    Giarc OpenBuilds Team
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    I use particleboard. It is also consistent and nearly half the price of MDF. But, I am thinking of doing my next top layer of spoilboard as OSB.
     
  8. laurent Besseas

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    Thanks,
    why it the RPM in mm in the screenshot? It doesn't make sense!
     
  9. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Haha good catch. Just cosmetic will fix in next version
     

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