diy update...

Well - after removing the forms, the concrete fireplace looks pretty good.  There are a couple of minor imperfections (places where the concrete didn't completely fill the mold) but we actually think that the imperfect look is kind of charming.  We will polish it up and see how it looks - if the holes get on our nerves then we will figure out how to use this paste or slurry stuff. 

I have posted the pictures below of the de-molding process.  I was actually expecting complete gaps where the concrete wasn't pushed into the mold properly...so we were pleasantly surprised!

Probably won't take any more pictures, but stay tuned for pictures that will have the fireplace to see the finished product.  I cannot wait to get the fire glass installed!