03-12-2016, 01:49 AM
(Edited 03-12-2016, 02:20 AM by Insertnamehere.)
ceez Wrote:it looks like a good idea but I wonder how long it will last, there's no adhesive used. a lot of companies now look for the fastest cheapest way to get things done.
Adhesive was not necessary when you did the job well. The typical Roman arch and other similar constructions were held in place simply by fitting the stones to each other. Some of those constructions still stand. Granted, tunnels are different.