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Spoil Board Material and Precautions-
The spoil board has two functions:
1.) To protect the vacuum table from the cutters. You will set the depth of your cutter a few thousandths of an inch deeper than
the job thickness. If there were no spoil board, this would mean that you would be cutting into the vacuum table.
2.) To transfer the vacuum from the table to the job. This means that the spoil board has to be porous to allow air to be sucked
from the underside of the job. We have found that low-cost MDF is the best material for this function.
Spoil Board Preparation-
When you purchase your
Contrary to what you might think, the thicker the MDF (, the better the suction that is created. It is not recommended that your
spoil board be thicker than 1 inch.
The MDF that you purchase will not be flat, and the machine will need to cut it to make it accurate.
Accuracy in the order of a few thousandths of an inch is required, so you will have to machine the spoil board flat. After your
spoil board has been skimmed many times and is 1/2-inch thick, discard and start a new spoil board. The spoil board edges are
very porous and must be sealed. Laguna Tools recommends that a "Hard Candle Wax" be used, as it contains no water.
Never use a water-based product to seal the edges of the
spoil board.
(Medium-Density Fiberboard) MDF
Spoil Board, it should be no thinner than 3/4 inch.
board, as this will make the board grow and it will be unsuitable as a
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