1. The adhesive of masking tape is weak, which may be because the glue used in the production is of unqualified quality, or the glue has been placed for a long time and the adhesiveness has decreased. It is recommended to buy from a reliable manufacturer;
2. After the masking tape is pasted on the surface of the object, the added pressure is insufficient. The solution is very simple, that is, after pasting, press it twice more;
3. The surface flatness of the masking tape object is not high. Different objects have different surface flatness due to different materials and shapes, so it is easy to warp. It is recommended to choose masking tapes with different viscosities for different surfaces.
