First, file the two adjacent faces of the chess piece 1 flat (right angle, it is best to find the two right angle sides that are the easiest to file flat). Then, according to the requirements of the drawings. Mark the machining dimension line of the part 1 on the marking platform or on the marking platform. After marking, use tools to process the part 1 to meet the drawing requirements.

2. File the two adjacent faces of Part 2 flat (at right angles). Then, according to the drawing requirements, mark the processing dimension line of part 2 on the marking platform or the marking platform. After marking, machine part 2 with tools to make it meet the requirements of the drawing.

Third, try to match part 1 and part 2. Trim. Deburring. Make it meet the requirements of the drawings.

Tools and measuring tools for processing dovetail parts: locksmith file (300MM) triangular file (300MM) height vernier caliper, vernier caliper, marking needle, steel ruler, shaping file, square ruler, smooth file, drill (3, 4), chisel and hammer.