Build the form from melanine, put the memorial in the form face down, silicone around the edge to stop concrete from getting onto face of plate, pour concrete and vibrate to eliminate bubbles.
Watch you tube videos on casting concrete countertop.
No way would I tie off temporarily to anything at that height, better yet God made me short and fat for a reason, and that was to keep me close to mother earth...
We have the ditra heat in a 400 sq foot kitchen, now we never set it that high (this winter I think the warmest we set it to was 70) but it is only supplemental heat.
How about a PM for the pro gun crowd?? Ive been toying with doing an 80% lower for some time, and now have a bit of time that I might be able to devote.
Aqua - if you are starting a list as to who needs them RIGHT now, or who can wait a little while so others can get the unit before moving or whatever, push me down the list. I am in no immediate rush, (electrical isn't installed yet)