That's a great idea!!, Then he just use any standard diamond hole saw with the center drill bit.

.... It's still going to cost him $100 for the hole saw but he's not asking for something that's cheap* Tools are expensive.!

This is one of those problems in life that is cheaper to just buy new* drilling granite is hard to do, it's going to be even harder to stay on Center with the existing hole.

There's no cheap way to do what you're talking about. Just buy the weights, unless you really really really want granite weights. Counter stores that deals in granite might be able to help you, but keep in mind if you drop them they're going to break.

Ballasts can go bad* - if you have the expertise just get the direct wire replacement.

I bet anything that the bag says pour in slowly, anytime I've worked with premix concrete I slowly added it to my water until it comes up to a consistency I like. Usually it's not the ratio of the bag says because of factors.

That piece of particle board being 2 in thick would probably be fine since you're only going a couple inches over the table that it's sitting on... It is the worse wood to get since it's basically sealed up saw duat. You're going to absolutely want to seal the particle board because if you get any water on it raw it's done.

More important question is, is that dining room table... Have a couple friends sit on the side of it to see if it can support that much water.