Chapter 20：Product finished (2/2)
”Where did you learn such a profound technique to melt the Golden Blood tiger bone? Even I can't see through it.” Sam just shook his head with a smile and went back into the room without speaking as if he was amused by the question. Actually, Sam's technique cannot be considered as a profound thing at all based on earth standards. Yes, he has an amazing fire control, but that is not the main reason that melting of the bone is possible. The main trick lay in making it in to powder.
Sam used the very basic of the heat conduction principle. Any metal will be difficult to melt if it is bigger. Why? Because when any substance changing its phase that is when it is changing from solid form to a liquid form then, it needs to absorb a large amount of heat energy after reaching a critical temperature point which is known as melting point. This is called latent heat of the substance. If the material is in a large quantity, it will take more time to raise its temperature to melting point and it will be harder to reach the Latent heat limit. Because according to law of heat conduction, a metal with high conductivity and large surface area will tend to conduct the heat to surroundings, instead of absorbing it. That is why in modern earth people won't use these kinds of materials for casting and go to powder metallurgy instead.
Sam simply used this principle and turned the large bone into millions of entities which are so small. These entities are the grains in the powder. Then he used his spiritual energy to separate each grain and used the fire to melt it separately. This cannot be called profound instead it would be called a waste in modern earth. Because in powder metallurgy the powders are not molten instead, they will be heated to a certain temperature after the powder is poured into a mould until a new bond is formed. Melting the powder is waste of energy in modern earth. But Sam didn't have that problem in this world.
Sam came back into the room and kept on working. He has total of twelve hours to work and he only used a little over 8 hours. So, he is continuing the work as he waited for the moulds to solidify. Sam just took out another scroll and started preparing more moulds with a new set of patterns. This time the number of moulds filled the whole room, in tens. Sam then walked towards the cauldron. This time he didn't use the bones instead he took out the whole large leather bag of glass pieces. Then he started melting it. This time it didn't take much time and then started pouring it in more than 90 percent of moulds in the room. The glass is clearly a lot different as it can be directly used for ordinary casting. But the glass back on earth can't be used like it as it solidifies as soon as it leaves the heat for a second.
As Sam was doing this the first batch of the seven moulds all cooled down, Sam slowly went there are and then, he slowly started destroying the moulds as Soil collapsed. Crowd looked at the scene curiously, they want to see how these knew moulds will work. Then they saw Sam taking out some metallic objects in various shapes and sizes from the heaps of the soil. Particularly from the seventh and largest mould he took out a bunch of objects. Sam slowly went to the grinding stone and started grinding the objects after an hour of grinding, Sam had a bunch of shiny metallic objects with him. Then he took some long and thin vertical metal strips with circular cross section. They can be considered as wires. Actually, it is impossible to produce a casted wire in modern earth, but here with Sam's control over spiritual energy and his dexterity, Sam has done the impossible. Sam took the wires to the anvil and stood before the circular protrusion which is used for making curved shapes. Sam put a wire across the circular protrusion and started coiling it. All the crowd looked at Sam with a surprised expression as he made a weird coil out of the wire. It is one of the oldest things created in the modern earth which is used in a myriad of things and completely new to this world. A helical spring. The crowd didn't know what purpose it serves, but they are waiting as they saw Sam making a number of springs. Then Sam finally made his way to table.
There are all the components in front of him shining. Sam took deep breath as he started assembling. The crowd looked as Sam took a slightly curved metallic block in his hands. It has a converging cross section. That is one end is bigger than other. The block has two circular grooves on bigger side and a single hole on smaller side. Then the Sam took a weird looking blade. What seemed like the handle of the blade is also curved, then Sam inserted the 'handle' of the blade inside the single hole on the smaller side. Then he took out some metallic bone powder with one hand and made a fist with another hand. Then he pointed his index finger from the fist towards the joint of blade and the block, then the fingertip of the index finger released a golden flame which is burning fiercely, Sam slowly moved the finger around the joint while slowly pouring the powder. Sam is welding the joint, but the crowd didn't understand, but the tower head understood. He saw a similar technique from the higher rank artisan, but the technique is made in much different form. Sam then did the same thing to another pair of identical block and blade. After that he kept them aside and took another which is also curved but has a large hollow, inside the hollow there are two holes smaller than the holes in previous block, Sam took a weird looking object which the crowd didn't understand. The object looked like a long cylindrical rod mounted by a thick metallic disc on top. It is a piston. Sam inserted the piston rod inside the block and then took another piston and did the same to another hole. Then Sam carefully took the previous block welded with blade and inserted inside the hollow. The two piston heads inserted perfectly inside the grooves on the metallic block.
Sam repeated the same actions with another set of the blocks. Then Sam turned over the set, there two, much smaller holes can be seen, and there is long rectangular hole. Sam inserted two coin like objects inside the small holes. Then Sam took two springs and inserted inside the holes and again inserted a pair of coins again. Then Sam took out a bottle of liquid from the storage and started pouring. It is the blood of the Blazing earth bull which he killed earlier. This is preserved in a bottle of special material. Crowd grew even more confused by his actions. But they won't be getting any of the answers now.
Sam slowly poured the blood and then repeated the same actions with another set. Sam kept the sets aside carefully not to spill the blood outside and took the rectangular block in his hands. Its width is a lot lesser when compared to other blocks. It has two long protrusions in rectangular shape on both sides and a circular hole in centre of the long flat side. Sam took two, wedge like objects and welded on either side of the circular hole.
The wedge is hollow all the way with both sides open. Sam took another hollow wedge which has one side closed and other side open, then Sam inserted the wedge (second one) such that closed surface will face the circular hole. He took two springs and kept them in hollow he took two small pistons and inserted the piston rods inside the springs. Then Sam took the set (Curved block and blade) he previously kept aside and inserted the rectangular the rectangular protrusion of the block into the hole of the set. Then the pistons on the wedges inserted themselves inside the holes where Sam poured the blood. Sam welded all the joints and then did the same on the other side of the rectangular block,
Now there is a weird looking object with half a crescent of irregular cross section on both sides of a rectangular block. Looking at the object the crowd didn't know what to make of it. Even tower head looked a little lost. Sam then took out a small thin rope like thing from the storage. It is the spinal tendon of the Blazing earth bull. Due to staying outside without any bodily fluids of bull, the tendon shrunk, but its elasticity can't be doubted. Sam inserted the ends of the tendon inside a small hole near the joint of the blades on both sides. The crowd didn't notice this at all. Sam poured some metal powder on both sided and melted it to solidify.
Sam came to the final step. There are only three objects left on the table. A weird looking spline like object and a small metallic frame and a coin like object. Sam welded the metallic frame on the bottom side of the central rectangular block. The crowd understood something for first time. It is the handle. They understood because Sam held it with his hand. Then Sam took the weird looking spline. They can't recognise the shape. But anyone from the modern earth who know the English alphabet will recognise, it is shape formed by intervening of the two 'S' letters in different fonts (Cover page). There is a circular protrusion on the bottom side of the shape, Sam inserted the protrusion inside the hole, then took the coin like object and welded it with the protrusion which came barely came out from other side. Then Sam took the completed object in his hands and held it with his hands. The 'S' shape is not parallel to the object but it is some what tilted outside. But Sam didn't care as it is intentional. Sam cleaned his creation for one last time and then slowly walked towards the platform.
”He seems to be finished.” One of the people from the outside crowd said.
”But what is it exactly? I can't understand”
”Me too.”
”Tower head do you know what it is?” One of the braver ones asked. But tower head shook his head. Sam took the weapon to the platform and placed his hand on the palm shaped groove on the platform.
The platform has two grooves. One is in shape of the circular coin. This is where badges of artisans kept when they bring the product for evaluation. They will place the badge in the groove and their hands on the badge to proceed for examination. The tower spirit will evaluate the product ranking. This is used for product appraisal as well as promotion examination. The fresh examiners have to keep the hand on the palm groove.