A "Air cooled hot knife" typically refers to a method of cutting through material using a heated blade. This technique is often used to cut materials like ropes, foam, plastics, and some types of fabrics more cleanly and efficiently.
In a different context, "hot knifing" or "taking a hot knife hit" is a method of consuming cannabis concentrates. It involves heating a metal knife until it is red hot and then pressing the concentrate against the hot knife to vaporize it, allowing the user to inhale the vapors. And air cooled has many cooling holes and big fan built in,so it can work to cut continuously.
-- 100W with round tips,R blade can cut fabrics ropes webbing belts and ribbons.
--Clean cutting edge and no frays.