The main reason for an enclosed cabinet is noise reduction. Some enjoy it for the appearance. Adding a collection hose under the table top requires a fair amount of "Make up air" to allow for free flow. The RT-1000 and the NYW updated router table use multiple holes in the door for this purpose. If noise is a concern then enclosed really helps. Other than that an open cabinet means not opening and closing the door for adjustments. Anything you do that reduces free dust is a good thing.
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Mike |