[TheForge] Castable Refractory

[theforge@mailman.qth.net]

I know this has been discussed before on theforge but I didn't pay 
enough attention.  I have an atmospheric forge that works well and is 
lined with 2" of kaowool and then covered with ITC 100.

Now I want to make a forge that is lined with Mizzou castable 
refractory 3000 degree.Just got the refractory today (55 lbs for 
$27.50)  but no info with it or on the bag as far as specifications or 
applications are concerned.  I assume I just mix water with it and not 
make it too soupy--I'll just wait plenty long for it to set up.  What I'm 
wondering is:

Does it help to put a short metal rods, screws, or whatever through 
the sides of the forge to help hold the lining in place once dry?  
What's the best thing to use?

What's the best way to make a removable form to fit the inside of the 
forge to shape the inside opening?

What are the disadvantages and advantages of using castable 
refractory as opposed to kaowool or durablanket type insulation?

Does Mizzou type material make a good floor for  a forge?

I plan to make the forge out of about a 10" or 12" pipe with about a 
.09 wall and form a flat place in the pipe for the bottom of the forge.

Been thinking about making the thickness of the insulation 
somewhere between 1.5 and 2 inches.  Will this be adequate?

Any suggestions or tips anyone has will be truly appreciated.  
Thanks in advance for your help.

Norm Larson