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How thin's your spoil board?

Discussion in 'Dimensional Signs' started by SqueeGee, Dec 15, 2009.

  1. SqueeGee

    SqueeGee Active Member

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    May 27, 2005
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    We have a vacuum hold down with LDF for the spoil board. It started out at 3/4" but is down to about half that now. How thin do you let yours get before you replace it?
     
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  2. Techman

    Techman Major Contributor

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    just before the 1/4 inch bolt heads start to touch the cutter
     
  3. John L

    John L Very Active Member

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    I use Trupan as the spoil board cause it lets the most air flow. I surfaced it too thin once (about 1/8") and the vac sucked divets where the plenum board voids were. i now stop at about 1/4" and toss it out.
     
  4. SqueeGee

    SqueeGee Active Member

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    AWESOME!

    I had never heard of "Trupan" but it sounds like what we're using. Harbor refers to it as Tumac Ultra-Light Medium Density Fiberboard. I (incorrectly) thought it was called LDF. $63 for a 5' x 10' 3/4" sheet. Is that about what you guys are paying?
     
  5. John L

    John L Very Active Member

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    The last I bought was from A&M Supply in Springfield, Va (formerly Allied Plywood) for $46 (+-). Harbor was higher then too so I would check. Harbor also didnt carry the Trupan brand.. which is the proven one.
     
  6. PGSigns

    PGSigns Active Member

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    Not sure where you are on the east coast but I get my trupan from Atlantic plywood in Richmond VA. Works great for a spoil board.
    Jimmy
     
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