What kind of saw to cut excess material? - link to pics

[prairiedogpics]

First, thanks to all who have posted their methods on these forums. So, so helpful!

My first successful casting is shown here:

http://blogprairiedog.blogspot.com/

Even though there are voids, the casting is successful to me because the details of the original model are all there. What a thrill to crack open the mold!

My main question is what kind of saw would you recommend to cut off the excess glass at the base of the final glass casting? Ring saw? Band saw? Tile saw? Hand held saw? (brand names and model numbers welcome!)
I have none of these and I'm not sure which to purchase as a beginner...

Thanks in advance for any feedback and advice regarding any of my methods.

Dan