not to forge a sword with, it's for small metalworking and aluminum melting.
Step 1: materials
for this you will need;
metal pipe 1 1/2 or 2 in
bathroom ventilation fan or other small fan (a hairdryer will work)
two 6 in by 5 in metal plate (1/8 in thick)
3 in by 3 in metal plate (1/8 in thick)