I hopefully will have my dust collector up and running shortly, it has been a struggle with many unforeseen issues. It is located on the first floor of my two story shop. with one wall separating it from the downstairs shop and I plan on building a couple more to fully enclose it leaving air passages for the return air to get back into the shop.
My question is what is a good material for the sound insulation that will not cost me an arm and a leg. Some of the ideas I have had are white styrofoam, moving blankets, Roxsol, fibreglass ceiling tiles. I'm sure there are more I've been told I'm at the end of the budget so the most inexpensive way is good it doesn't have to be pretty and it doesn't have to be dead quiet.