This is my only real complaint about doing this crafting business as my full time occupation - I am in a constant state of fear. I would be so sad if I was told that I had to stop my stamping...that would mean I'd have to go out and get a real job, and I'm just not ready to do that again. SO! I try and do everything I can to prevent the noise from escaping my apartment's walls. I've placed my "studio" in a location that is as far away from my neighbors' walls as possible. I also try and run the dishwasher and/or washing machine at the same time that I am doing some hard core stamping. However, my main weapon against deadening the noise is - resourcefulness at work - my leather scraps!
I've attached a piece of leather to the metal handle that I stamp my large fonts with. However, my main tool of destruction, my hammer, is where this technique is most useful:
My own invention. Leather circle + packaging tape = decent noise muffler. That's what I call ingenuity! Or, more likely, paranoia...
Helps to deaden the noise when I'm beating the crap out of some unsuspecting metal stamps.