Monday, 30 January 2012
It got cold!
Once finished, I addressed finishing the main arch structure. This involves cleaning off all the excess fireclay mortar and ramming the gaps with dry fireclay using a small wooden wedge. This ensures that all the arch bricks are compressed together. A time consuming and tedious job although very important for the final integrity of the arch, it took me five hours just to do half of one side of the structure.
So, for this week I have to finish ramming the arch and mix up some refactory castable to fill some voids at the base of the chimney as well as around the blow hole tubes in the top of the arch and then the job of laying the secondary arch can begin. Plenty of clothes on as it's set to get even colder. Joy :-)