When making a claw hammer, you must cut the material first, and check the length of the material with a steel ruler after cutting. When cutting steel, pay attention to the principle of two verticals and two in one direction.
The file is then trimmed on both ends of the steel until the ends are smooth and the file is perpendicular to the circumference of the cylinder. Then draw a line, put the cylindrical steel on the V-shaped iron, measure the height of the V-shaped iron with an altimeter, use this ruler as the benchmark, add 12.5mm to the cylinder to draw a line, you must draw a circle, then rotate half To circle, use the same method to mark a circle, find the center of the circle, and use a drill to make holes in these lines. When sawing, use a hacksaw to cut off one side of the barrel, and pay attention to leaving a punch when cutting.
When filing, use a flat file to flatten the surface, check the light transmittance of the plane, leave half of the sample to punch holes when filing, and then cut on the other three surfaces and file it with a flat file. The scribing is to draw the tip of the claw hammer on the paper with the fitter lofting method, cut out the cardboard, paste it on the beaten raw steel, draw the outline, and then saw it.