Stub pin is a professional tool for aluminum template splicing, which has the advantages
of simple structure and low cost. However, when using this pin to fix the aluminum template,
wedge blocks need to be knocked into the narrow grooves on the side of the tapered pin.
The thin two-sided area is very small, and it is difficult to accurately apply force when striking.
It needs to be repeatedly struck with the help of other tools.
In the process, it is easy to smash and cause damage to the surface of the aluminum mold.