Is this a safe way to secure frags?

[Yates273]

So on another forum I saw someone who uses thermo plastic to secure their frags seems like it would work great and a lot cheaper than putty. Anyone else use it. Seem very strong when it dries. They also sell colored beads and you can mold into just about any color

 

[Cell]

Gets brittle and cracks too easily after a period of time.

 

[Yates273]

Ahh figures seemed like it would be a great alternative.