I'm preparing to reline an existing clay lined chimney with a 6" stainless steel liner.  I currently have an 8" diameter steel thimble that has been mortared in.  The depth of the existing thimble is about 22".  I'm planning to get a tee connector with a long snout.  I'm unsure of the best way to fasten the new snout in the thimble and make it sturdy, look nice & easy to access for cleaning.
Thanks for your help
	
		
			
		
		
	
				
			Thanks for your help