신박한 나사산 만들기 / 누구나 탭핑 비트 없이 가능 / 목공 DIY

This video is a new way to make a thread using a glue gun and oil without a tapping bit. The advantage is that you can create threads of any size and shape of the bolt and on a variety of materials (wood, plastic, gypsum board, metal, etc.). The disadvantage is that the glue gun is weak against heat, so you need to be careful about frictional heat when tightening bolts. thank you.