How to put a screw through slate

i used a masonry bit and it was very easy. I used steel wood screws to attach the slate the the wood. As far as breaking the slate, anything could happen, but for me it didn't. And it was one hefty piece of slate.
 
Thanks all for the replies! The only problem with superglueing it.is.the wood is.currently floating but still pretty waterlogged and It.has to.be dry to glue which would take a while as well... Also if I did that would gorilla glue work? my neighbor has a bunch of tools so hopefully hell have one of those drill bits.

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Gorilla glue is semi water soluble. i used it for an industrial desing proj in college for an underwater biosphere we were designing. the gorilla glue slowly broken down in the tank we put it in for critque... not cool for critique, even less cool for fish
 
None of the glue that anyone mentions in this thread "would be fine."

All of those super glues have chemicals in there that can seriously kill your fish.

Use only 100% silicone designed for aquariums.
 
if you look closely in the picture of the silicone i am holding it says 100% silicone.no mold/mildew inhibitors
and it you look at the back of the container of the lafarge glue it says Aquarium safe.

that being said always wait 5-7 days before adding to an aquarium,if the silicone is not dry it will probably have bad effects on your fish
 
Ok I drilled through the thick piece of slate and it didnt split but actually separated the 2 parts, which actually made it turn out better. Now my question is how large of a screw should I put into the wood? I know it has to be stainless steel
 
drill the wood the same way you did the slate. Use a smaller drill bit and drill an inch or so into the wood. Find a screw that's long enough to go through the slate and an inch or two into the wood.
 
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