When dealing with discarded cables and stripping copper wires, attention needs to be paid to safety, efficiency and legality. The following are practical step-by-step suggestions： --- ###**1. Safety precautions (must be given priority)** 1. **Wear protective equipment** -Thick gloves (to prevent cuts), goggles (to prevent debris splashing), and masks (to avoid inhalation of toxic gases from combustion). 2. **Confirm that the cable is out of power** -Make sure that the cable is completely abandoned and uncharged (to avoid the risk of electric shock). 3. **Avoid burning the insulation layer** -Combustion will produce toxic gases (such as dioxin released by PVC combustion), and may be illegal (polluting the environment). --- ###**2. Efficient wire stripping method (selected according to tool)** #### **1. Manual tool method (low cost)** -**Applicable scenarios**: A small number of cables, no professional tools. -**Steps**： 1. **Fixed cable**: Fix one end of the cable to the edge of a bench or wooden board. 2. **Cut the insulating layer lengthwise**： -Use a utility knife or wire stripper to cut the outer skin along the length of the cable (moderate force to avoid cutting off the copper wire). 3. **Peel off the skin**： - Clamp the cut insulation layer with pliers and tear it off in reverse. 4. **Deal with inner insulation**： -Thin copper wires may need to be peeled off one by one, or quickly rubbed with sandpaper to remove the thin layer. #### **2. Friction heating method (for harder insulating layers)** -**Principle**: Rapid friction generates heat to soften the plastic. -**Steps**： 1. Lay the cable flat on rough ground (such as cement ground). 2. Rub the surface of the cable back and forth vigorously with the sole or wooden board until the insulation layer becomes soft. 3. Use pliers to tear the softened insulation layer. #### **3. Simple mechanical assistance (suitable for thick cables)** -**Tools**: bench pliers, hammer, chisel. -**Steps**： 1. Fix the cable to the bench pliers and use a chisel to align the insulation layer with the copper wire joints. 2. Tap the chisel with a hammer, cut the insulation layer and peel it off manually. --- ###**3. Recommendation of professional tools (if long-term processing is required)** -**Manual wire stripper** (10-50 yuan): suitable for thin lines, the depth of the blade can be adjusted. -**Electric wire stripping machine** (hundreds of yuan): It can handle a large number of cables efficiently, but the cost is higher. --- ###**Fourth, precautions for selling copper wire** 1. **Classification processing**： -Bright copper (non-oxidized) price > miscellaneous copper (oxidized or impurity-containing). -Remove all insulation layers (residual plastic will reduce the recycling price). 2. **Legal compliance**： -Confirm that the source of the cable is legal (avoid handling stolen goods). - Contact a regular recycler (proof of identity and proof of the source of the item are required). --- ###**5. Alternative solution (if stripping is too difficult)** -**Whole sale**: Some recyclers accept undelined cables, but the price is lower (about 30% of the pure copper price). --- ###**Summary suggestions** -**A small amount of cables**: Priority is given to manual tool method, with friction heating. -**Long-term/large-scale processing**: Consider investing in wire strippers or second-hand power tools. -**Be sure to comply with environmental regulations** to avoid burning or discarding the insulating layer at will. I hope these methods can help you, operate safely and realize it legally!