Dry each time before the start of the heating tool (the blowtorch or drying box) baking mold, get rid of the moisture. After each use to clean mold, use a soft brush or other soft items to avoid damage to the mold. Check mold contact surface of the adaptation, to prevent copper liquid seeps out from the crevice operation. Mold clip for the opening and closing of the mold, mold folder tightness affect the effect of welding, before welding starts to seriously check mode folder, and make the appropriate adjustments. Mold made of graphite, is relatively weak, unable to withstand the the slinger strong impact, it may not be beyond the dimensions of the mold welding material is forced into the mold, or use hard materials and tools to remove residue. The life of mold is generally up to 50-100 times.