Damn thanks no chowder! Though since knowone answered sooner I did it my own way.

We have a brick fire place and I rolled it in a baggy and rolled it a few times. Since some of the close bricks became quite hot I closed the firepit door and set the bag on a little peice of paper under it on the brick.

Then I hammered the shit outa it again. And let it sit there a while and did it once more and since it litterally feels -20 degrees here in Michigan I let it sit outside for 2-3 minutes.

Its not the biggest thing in the world but it did the job. Didnt break apart or nothin. Thanks No-Chowd!