He forcefully bent it and found it easy to distort, which indicated that the sturdiness was still not sufficient.
He felt like he was missing a step, so he took out the Refining Secret Manual, looked through it, and discovered that to achieve more solid tools, he needed to keep hammering the hot steel.
Only with higher density can it become more robust.
Just like a sponge, only by compressing it can you achieve a more resilient effect.
Lin Yifan threw the iron ring he had refined back into the furnace for burning.
Because of the high purity of the iron ring, this time he only needed to melt it into liquid.
So he kept increasing the fire to raise the burning temperature.
In just a few minutes, the iron ring melted.
At this point, Lin Yifan poured it into the mold and used a blower to accelerate solidification.
The solidified iron ring was still hot; at this point, it had a feature, which was high flexibility, suitable for hammering.