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Thread: Spoil/Waste Board Questions

  1. #13
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    Default Re: Spoil/Waste Board Questions

    Quote Originally Posted by wmgeorge View Post
    I have never had a aluminum clamp slip, ever in all the years I've been using them. You need to make sure you have them positioned correctly, in the right places and double check before starting the job.
    Maybe I've not been careful enough, but if I have fuss with them to any degree, they are not worth it to me. No fussing with my clamps, they have never slipped, and wood is friendlier to an endmill than aluminum.

    Gary


    The Old Man and the C -----NC


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    Default Re: Spoil/Waste Board Questions

    Quote Originally Posted by Project_Hopeless View Post
    What I'm trying to decide is whether to use 6-8 t-tracks and MDF strips, or a single 4x4' board and a whole lot of t-nuts.

    If I go t-nuts in a 4x4' 3/4" MDF is it enough to use only 4 bolts at the corners to hold the spoil board to the torsion box frame? Or should it be secured at more positions?


    IMO, 4 t-nuts are not nearly enough to hold the MDF to the torsion box. You will want mounting points around the edges and in the field. I would do as Gerry does. Glue it on. Can't go wrong with that, since it is attached everywhere and becomes integral.

    Gary


    The Old Man and the C -----NC


  3. #15
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    Default Re: Spoil/Waste Board Questions

    Quote Originally Posted by GME View Post


    IMO, 4 t-nuts are not nearly enough to hold the MDF to the torsion box. You will want mounting points around the edges and in the field. I would do as Gerry does. Glue it on. Can't go wrong with that, since it is attached everywhere and becomes integral.

    Gary
    If the spoil board is glued down to the table how do you change it out when the time comes?



  4. #16
    Community Moderator ger21's Avatar
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    Default Re: Spoil/Waste Board Questions

    At some point, you just glue another layer on top.

    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. #17
    Community Moderator ger21's Avatar
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    Default Re: Spoil/Waste Board Questions

    Here's how I did my current table.
    https://www.cnczone.com/forums/cnc-w...tml#post671212

    This video shows how I clamp parts with the cam clamps.


    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)


  6. #18
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    Default Re: Spoil/Waste Board Questions

    Quote Originally Posted by Project_Hopeless View Post
    If the spoil board is glued down to the table how do you change it out when the time comes?



    Follow this technique, and you don't cut into your spoilboard. Makes the question moot. It involves and extra step, but IMO, it's worth it. I use my touch plate, though. Much more accurate.

    Note: This is only important when making through profile cuts. I you are pocketing, where you don't risk cutting into the spoilboard, zero off the top of the material. Otherwise, your cut may be off. If cutting plywood, the cut will definitely. Plywood is thinner than its stated size.

    Gary


    The Old Man and the C -----NC


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    Default Re: Spoil/Waste Board Questions

    Always wondered if composite decking would work as a spoilboard. I don't think it would expand and contract as much as MDF does.



  8. #20
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    Default Re: Spoil/Waste Board Questions

    Quote Originally Posted by nlancaster View Post
    Always wondered if composite decking would work as a spoilboard. I don't think it would expand and contract as much as MDF does.
    I'm skeptical. I would think the resin and plastics would melt onto your cutter.



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    Default Re: Spoil/Waste Board Questions

    Well, I have seen people machine that material on CNC routers before.

    And you really should only just be skimming the spoil board most of the time anyway.



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    Default Re: Spoil/Waste Board Questions

    Quote Originally Posted by nlancaster View Post
    Always wondered if composite decking would work as a spoilboard. I don't think it would expand and contract as much as MDF does.
    Your supposition doesn't match my experience. MDF expands and contracts due to moisture. Composite decking is temperature sensitive. Expansion and contraction can be pretty extreme. Personally, I wouldn't use it, even in my climate controlled shop. Also, the cost is very high when compared to MDF. IMO, there is nothing to recommend composite.

    Gary



    The Old Man and the C -----NC


  11. #23
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    Default Re: Spoil/Waste Board Questions

    Quote Originally Posted by Project_Hopeless View Post
    I'm skeptical. I would think the resin and plastics would melt onto your cutter.
    Composite routes surprisingly well. I've routed it.

    Gary


    The Old Man and the C -----NC


  12. #24
    Community Moderator ger21's Avatar
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    Default Re: Spoil/Waste Board Questions

    I've even built a deck with it.

    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)


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