With this thread,your 'safe to say hayemaker is no longer a ducker' thread and nearly every one of your 400 odd posts, its 'safe to say' you're a bit of a bellend Miguel.
You can hit blu tac/silly putty without actually damaging it, due to it's elastic properties, which would indicate a good chin, not a bad one. Glass on the other hand is physically a quite solid substance, yet would not make for a good chin due do the fact it's brittle. I think with threads like this and your posting style, you may find the General Forum more suitable. Thanks anyway...