What are the nails that hold billboards in place called?

If the inkjet advertisement on the store door needs to be replaced with a new inkjet cloth, but you do not want to remove the angle iron shelf, you can consider the following steps to quickly replace it:

Prepare tools and Materials: New spray cloth, all-purpose glue, brush, electric drill, steel sleeve and dovetail nails are required.

Clean the surface: Use detergent or water to clean the surface of the old inkjet cloth to make sure there is no dust, dirt or other impurities on the surface.

Paste the new inkjet cloth: Lay the new inkjet cloth flatly on the old inkjet cloth, making sure it is aligned and flat. Then use all-purpose glue to stick the new inkjet cloth around the angle iron frame. Pay attention to apply the all-purpose glue evenly to avoid bubbles or wrinkles.

Fix the inkjet cloth: Use a hand drill and a steel sleeve to fix the dovetail nails on the angle iron frame along the perimeter of the new inkjet cloth. Make sure the nails are at the appropriate position and spacing and do not damage the inkjet cloth.

Trim off the excess part: After the new inkjet cloth is completely fixed, use scissors or a blade to trim off the excess part to ensure that the new inkjet cloth is completely attached to the angle iron frame.

It should be noted that safety must be ensured when replacing the inkjet cloth to avoid accidents during operation.