Here's my bouncing chakram:
Latest Version: 0.9.03
Download @ Nexusmods: http://grimrock.nexusmods.com/mods/174/
Video: http://www.youtube.com/watch?v=2X_10DWdC4A
It still need a bit of testing but it works (at least for me)
There is also a debug flag, if set to true it will print messages to the console.
The chakram bounces on walls, metal doors and blockages, slices through monsters and breakables and activates buttons and levers.
Metal Junks will deflect (depending on facing) the chakram. You can configure what to bounce/deflect on into the script.
The model and the textures are original creations.
The script embeds parts of JKos fw_fx for special effects.
I took the idea from Pat Ferguson's video "The Glaive of Krull for Legend of Grimrock [Mod]"
Feedbacks are welcome

Alex