the application can be tested by clicking here. it involves heating of the carbon steel, and then followed by fast cooling process inside the cooling medium such as water and oil. here are five of his top tips. it allowed us to have a gate the size that we needed it to be and have a door to open for when our dog needed to go out to the bathroom. he says after 45 years of teaching music, he’s ready to step back and see where life leads. 