The hollow iron on picture below that I handle is still cold, if this iron have fire, must use a clamp to handle that iron, on the real process this iron must be fired first before the cable rolled around the hollow iron.
- Fire this hollow iron or roll iron in gas stove for about 3 minutes.
- Take the hot iron using clamp; don’t use your finger directly!
- Rolled the cable around that hot iron, handled and wait for about one and half minutes
- Then lets the rolled cold and you can loose it.
The result is as on the picture below: