Reddit reviews Dust Right Dust Separator

Dust Containment, Dust Collection, Dust Filtration.

First, go to any big box store (I think even walmart may have it) and get a roll of sheet plastic. Try to get at least 6mil thickness. Attach this to the bottoms of the joists and subfloor. Be sure to go up in between the joists to seal that off too. Staples work really well, especially if you reinforce the edge of the plastic with a piece of duct tape on both sides. Wherever your door is going to be, overlap to pieces by about 12-18" to create a usable door flap.

Second, (if you don't already have one) get some sort of dust collection. A simple shop vac will do, though I highly recommend that you get a large one with a 2 1/2" hose as well as some sort of dust separator or you will be buying vacuum bags and filters like crazy.

Finally, get the Wen 3410 for $125. It has plenty of air movement and at full speed will cycle the air in a 20x20 room something like 7 times per hour I think. It's also quiet. The unit is identical to the Rikon and a couple other units at a much cheaper price.

The first two are the most important, but the last will greatly reduce the amount of dust that stays in the air, and more importantly, your lungs. A good respirator would also be a good investment as well. For less than $20, it's a good investment. I like the 3M 650x Quick Latch Respirator. I use one of these along with the P100 filters. If you have to go cheap on the last one, get a $20 box fan and a 20x20 furnace filter. That works decently too.

edit: I too work in my basement. I did the above and do not have problems with dust anywhere in the house, even right outside of my shop.

You want something like this. Separators really work well. You might need to get some fittings, depending on the diameter of your vacuum hose.