I have an old 12" Atlas, which I just put a fix on. I use a 1 1/4" shop vac for the machines that generate more chips than dust, so I put a hole in the cover, glued a couple of PVC fittings together, then used a 1 1/2" to 1 1/4" compression fitting to clamp on the shop vac hose. I'll still put some more sealing around the gaps, it does better than the old port at the lower edge of the cover used to, though. Cheep is my middle name.