Eld-Etroa CementA collaboration Of Elden Secret Techniques, and Etroan construction know-how. The Eld have long since known a method of modifying the base weight/density of Skytears. (How the dense Skytears were created was a secret later learned). Using crushed Skytears in in a mixture of gravel, crushed obsidian, sand, and slag, EE Cement is created. This is then mixed with water and used to build walls and buildings..
EE Cement was a marvel of it's time, with structures lasting a 100 years unchanged, at least. Not only that, but it was incredibly strong, far outpacing ordinarily stone building. The Skytears mixed in usually remained very cool, lending their weight to the construction,with the rest both taking from and insulating the crushed Skytears. (Studies today truly showcase it withstanding the test of time. EE Concrete structures simply grow denser and less dense as temperature fluctuates. Cracks never appear in it, as there are no cracks for ICE to enter and expand. This mostly shows Skytears strange properties and how it can affect objects when mixed into them.)
These were used to built long term just about everywhere that needed to last, often being used in defensive structures.
Elden secret: Crushed Skytears have smaller surface areas, which means leaving it cold, such as high in the treetops, could allow it to be mixed into other things to give the resultant mix weight and density. This is actually how they made arrowheads, chipping Skytears and keeping it in the cold for long periods of time till it's base state changed. The excess Skystone was mixed into other things during manufacturing processes to imbue an effect.
The Skytears we were first given was left in sunlight, and stored lower down, and so had a lighter base state.
Eld has their own tricks. Here is a new one though. Having it now means we can use it later, and it keeps our fortifications specialty up to date.
Skystone CannonballsA few things to note about Skytears before we get into this. First, dropping a Skytear into magma, not something that helps. It just floats up and up very quickly as it cools, and then keeps going. Same applies with trying to forge it, Skytears just don't do traditional forging in it's current state.
However, there is a solution to this. After proving our reliability, they have entrusted to us a Secret to make Skytears heavier, Skystones as they are. Put simply, by cooling it in cold water, it becomes dense. And by breaking Skytears beforehand into pieces, the resulting pieces after this are even more dense. Smaller pieces have higher density after this. Afterwards, freezing them by burying them in snow or cold earth for a couple of hours causes their density to be very high for their size. And this becomes their base status even after unearthing.
These new pieces also have something else going for them, they can be melted down in a forge and recast, though the heat needed is rather high. (We also tested with the magma again, and a completed piece still floated up, though very slowly and after a long time compared to before.)
Casting them into cannonballs, we have ammo that is very dense, heavy, and strong. Perfect for sinking ships and tearing down walls and gates. Or people we face. The Skystone averages out to the density of the pieces used in the recast, so some were too heavy, but by refining the quality control of the process, we've got a good Skystone Cannonball.
Revisions
NOLAS: (2) TricMagic, Vostok
Colonial And Protectorate Forces (CAP Force) and the Dragon: ()
Sunic Cannonball: (1) Vostok
Etroan Spear: ()
Eld-Etroa Cement:()
Skystone Cannonballs: (1) TricMagic
Forging process for denser Skystone, as compared to lighter Skytears. Though it's mostly making them denser in the first place, and the liquid form reflects it's density.