I do have a Dust Deputy hooked up to a shop vac that I use for sanding with my random orbital sander only. It does a great job of collecting the dust from the ROS into the five gallon bucket. I use the sander on every project I make, so it gets used a lot. I only have to clean the shop Vac filter once a year. With a quiet vac, it should do the trick hooked up to a scroll saw. You have to have a port under the table to collect the dust that falls under the table, but most importantly, you have to have a port above the table to collect the airborne dust. That is most important!