I have been doing a lot of research here on vacuum table designs & found lots of "DIY vacuum table" posts. It seems everyone is either going the $5K to $10K commercial vacuum pump route or they use a Fein or Shop-Vac type product as a hold down system. Why do I not see more/any using the larger 2 to 5 hp dust collector type systems as a hold down. I found several at Grizzly that advertise around 2300cfm & a static pressure rating of 16.7" or more for under $500. I'm sure there is a reason no one is using them but why? What am I missing?