1. First, determine the modulus according to the injection volume of your machine. 2. Determine the structure of the mold (whether the nozzle, runner and product are separated); 3. Determine the parting surface, nozzle, waterway, runner (these are determined according to your material, and ABS of general end cover is more common), thimble, etc. 4. Ordering mold blanks and mold cores; 5. Cut the wire into a cavity (your product is relatively simple, no electrode discharge is needed! ), processing the surface of the cavity according to the product surface requirements, 6. Close the mold, fly the mold, try the mold, and make adjustments according to the first sample!