Leah: Alright lets cut the arm...
Xander face comes shock with the choice his face going pale but as the decay starts to spread even more up his arm he knows it has to be done.
Xander: Alright look we got to cut it above the point right.
Xander points to his mid arm.
Xander: We need something to stop the bleeding, we need something to cut it with and something to cauterize the wound.
There is a melting furnence on the other side of the room that they can use. They grab a piece of metal and get it hot.
Xander: Alright... We need... We need... We need something to citvit with.
They look around and see a old paper cutter blade it looks dull they could use that
Or
There is a little exacto knife sharp they could use as well though it may take longer to do its sharp can get the job done.
Choice
@Grim @Sylar @Keepinitfresh
@Chris @Sabretooth
Knife
Or
Blade