Answer:
What insect does a blacksmith manufacture?
I have a straight back and sharp teeth to cut objects.
I make things short but I am pretty long myself
What force and strength cannot get through, I with my unique teeth can do. What am I?
The warmer I am, the fresher I am. What am I?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.