I have no idea where to get a sheet of acrylic let
alone know how to cut
it :-)
I have no idea where you've get it in the State, but I assume cutting it
is much the same in all countries :-)
I'd use a fine-toothed hacksaw blade. One trick that avoids chatter is to
stick a piece of sellotape [1] along the lind of the cut on both sides,
and to cut through it.
[1] Does that term make sense? It's a brand-name-that-became-generic for
slef-adhexive plastic tape, normally used to stick paper together, etc.
-tony