In stark contrast to what others have said, I applaud you for your construction.
Unfortunatley, as fate would have it, throwing grenades with the gravity gun is a far more effective and block-economical method, but it would appear you have an eye for making devices such as these, it's people like you that discover the next best way to do something in SourceForts, such as the guy who discovered the 'player cannon'.
Keep at it...you might come up with something one day...
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