why black grids

Started Jan 30, 2008 | Discussions thread
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patrickhall Senior Member • Posts: 1,180
why black grids

I've seen posts on making your own grid from politician's cardboard fliers. My question is since all of these boards are usually made of white board, why does a grid have to be made of black material? If I mask off the outter most part of the grid and make that black, will it prevent spill off from the outside confines of the grid or does having all the interior white ruin the effects of a grid spot?

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