I am working on a box to enclose my PC 890 ubder a router table. My primary motive is dust control. I'll slant the bottom towards a 4" blast gate to the dust collector.
But I am also experimenting with sound control. An acoustic box should enclose the unit, but if it is an all wood box with firm connections to the table, it would work as a resonance chamber like the box of a violin or a drum.
I want to try 2 layers of 3/8" baltic birch ply, with a layer of rubber router mat between them. I'm trying to figure out the connections between layers.
I thought about building 2 boxes, with the inner box covered by the mat and fitted inside the outer box. The bolts or screws that connect the boxes would have rubber washers.
Any other ideas for attaching the sound-insulated box together?
Other sound control: I bought PC 890 because it's unloaded decibel rating was one of the two quietest tested. I am trying Whiteside bits and others with a smooth cut in hopes of reducing chatter. I am using fittings for the dust collector instead of the shop vac because the dust collector is a little quieter and a lot lower tone.