I cover the ceiling with wooden slats. Made a device for unstressed nailing the nails from the file handle. It is called "nailer". The mobile chrome element is made from a link from an old telescopic antenna from an old radio receiver - selected according to the diameter of the nail head.
The principle of operation is clear from the sketch. The antenna link is a guide for the nail in the hole. The nail is pushed out by the handle with a pin installed in its hole, while the link of the antenna goes into the hole in the handle, the nail is heated into the tree. After detaching the handle from the surface of the tree, the piece of the antenna returns to its original position with a spring.
- how the spring works: