That's a good idea,. I am considering this as well.

Your point about scratching is noted. I am a little torn because I'm not sure if I want to permanently alter the table. The table is nothing fancy though, so I might do that, but I do also like the look of the plexiglass. If I were to use the plexiglass any ideas how it could be done so that it wouldn't slide?

Thanks for your help!

plexiglass : comes from the greek word for disappointment.

seriously... drilling holes will split it. dusting it will scratch it.

since you already own it, go ahead and use it. don't worry about it sliding around, you'll be so disappointed by its non-dustibility that it won't be there long. : (

Drilling Plexiglass (acrylic) can be a little tricky but hardly impossible. The key to successful drilling is to clamp it securely.

What I think would work for Scott is just 4 small nails, one in each corner. The local home center probably has some decorative brass or copper nails that would look nice. Take a thin piece of wood (like paint stir stick, which they'll probably give you at the same home center) and clamp it over the Plexiglass, map, and table. Use any kind of clamp - spring, c, or something like a Quick-Grip. Use a drill bit that's the same diameter as the nail (or slightly larger) and "flag" it with a piece of masking tape to indicate how deep you should drill (just through the stir stick, plastic, and a little way into the table top. Remove the clamp and stir stick and carefully drive the nail.

It turns out the piece I have is not made from acrylic, it is extruded poly carbonate. Shows what I know. Does this change any of the advice above it terms of scratch resistance, ability to drill etc?

Thanks,

Scott

Its not that hard to drill into plexi, you have to use a tapered bit, and take it easy.

You also could use clear silicone caulking, 4 dime size blobs at each corner.

How about using museum wax in the corners to keep it from sliding.

I'd decoupage the map onto the plexi, and put something anti-slip under it.

I like the idea to decoupage the map onto the plexi directly I haven't considered that. Could be a good option for me as I can always take it off the table, or do something else with it, if it doesn't work out. Has anyone done this before? Is it different that decoupage to wood surfaces or pretty much the same process?

Thanks for all the replies, very helpful!