How to use a Lishi tool?

You're asking a great question that gets to the heart of what makes Lishi tools so revolutionary for locksmiths! As both a locksmith professional and someone who sells these tools, I can tell you that while the fundamental principle is consistent, the exact feel and technique will vary slightly by lock and even by individual Lishi tool.

However, the core concept of using a Lishi 2-in-1 pick/decoder is to simultaneously pick the lock while reading the depth of each pin.

Here's a generalized step-by-step guide on how to use a Lishi tool, along with some critical advice:

Prerequisites:

• Correct Tool: You MUST have the correct Lishi tool for the specific lock you are working on (e.g., an HU66 Lishi for a VW/Audi/Porsche, an SC4 for a Schlage SC1, an FO38 for a Ford Tibbe, etc.). Using the wrong tool will achieve nothing and could damage the tool or the lock.
  
• Clean Lock: Ensure the lock cylinder is clean and free of debris. Lubrication (like graphite or PTFE-based spray) can sometimes help, but be cautious not to overdo it.
  
• Understanding of Lock Mechanisms: A basic understanding of how pin tumbler locks work (shear line, drivers, key pins, springs) is essential.

The General Process (for common pin tumbler Lishi tools):

1. Insert the Lishi Tool:

• Carefully insert the Lishi tool into the keyway. It should slide in smoothly.
  
• Ensure the markings on the Lishi tool (usually a reference line or arrow) align correctly with the lock cylinder, indicating proper orientation.
  
• Tip: Sometimes a slight jiggling or gentle pressure helps it seat fully. Do not force it.

2. Apply Light Tension:

• Rotate the Lishi tool slightly in the direction you would turn the key to open the lock (e.g., clockwise for most standard locks).
  
• Apply very, very light and consistent tension. This is one of the most critical steps. Too much tension will bind all the pins, too little won't set any. It's often compared to the weight of the Lishi tool itself, or just enough to feel it slightly "grip" the cylinder.

3. Locate the Bitting/Pins:

• The Lishi tool has individual levers corresponding to each pin position in the lock.
  
• Starting with the first pin (usually the one closest to the bow/handle of the key, or as per the tool's diagram), gently insert the picking end of the Lishi into that pin's channel.
  
• You'll feel varying resistance:

Loose Pin: Moves freely, no tension.
Springy Pin: Moves easily but springs back.
Binding Pin: Offers resistance, feels "stuck" or "mushy." This is your target!

4. Pick the Binding Pin:

• Once you've identified a binding pin, delicately lift or depress (depending on the cut direction for that specific pin and cylinder) the corresponding lever on the Lishi tool until you feel a small click or give from the pin. This indicates you've set the driver pin to the shear line.
  
• Maintain your light tension while picking.
  
• Important: When a pin sets, you might feel the tension wrench (the entire Lishi tool) give a tiny amount in the turning direction (a "false set"). This is good!

5. Repeat for All Pins (Picking):

• Continue this process, moving from pin to pin, feeling for the next binding pin, and setting it.
  
• You'll often cycle through the pins multiple times as setting one pin can cause another to bind.
  
• Keep your tension consistent, but be prepared for it to require slight adjustments as you get closer to the open.

6. Open the Lock:

• Once all pins are set, the cylinder will turn fully, and the lock will open. Congratulations, you've picked it!

7. Decode the Lock (Crucial Lishi Advantage):

• DO NOT REMOVE THE TOOL YET!
  With the lock picked open (or just before it fully opens, depending on the tool and lock type), the Lishi tool's unique design allows you to read the depth of each pin.
  
• Carefully push each individual picking lever ALL THE WAY IN (or up/down, as per the tool's design). The internal mechanism will read the actual depth of the pin at the shear line.
  
• The Lishi tool has markings (usually numbers 1-4 or 1-5, representing key depths from shallowest to deepest) next to each lever.
  
• Record this depth for each pin position. For example, "Pin 1: Depth 3, Pin 2: Depth 1, Pin 3: Depth 4," etc. This is your bitting code!

8. Remove the Tool:

• Once you've recorded all the depths, you can carefully remove the Lishi tool.
  

Key Tips for Success:

• Practice, Practice, Practice: Lishi tools require a good feel. Start on a practice lock or a known working lock where you can see the key.
  
• Light Tension is Key: Over-tensioning is the most common beginner mistake.
  
• Listen and Feel: Pay attention to the subtle clicks and changes in resistance.
  Visual Aids: Many Lishi tools come with diagrams or have online videos demonstrating their use for specific locks. USE THEM!
  
• Don't Force Anything: If a pin isn't moving or the tool feels stuck, release tension, try a different pin, or restart. Forcing it can bend the delicate wires or damage the lock.
  
• Understand the Lock's Direction: Some locks turn clockwise, others counter-clockwise. Know which way before you start.
  
• Be Patient: It takes time to develop the skill. Don't get discouraged!

As your tool seller, I'd also recommend:

• Buying Genuine Lishi: Clones are often poorly made, inaccurate, and can damage locks.
  
• Starting with a Common Lock: Pick a Lishi tool for a lock you encounter frequently (e.g., HON66 for Honda/Acura, HU66 for VAG group, KW1/SC1 for residential).
  
• Watching Expert Videos: Look for videos from reputable locksmith trainers demonstrating the specific Lishi tool you have.

Lishi tools are an invaluable asset for any locksmith, significantly speeding up both entry and key generation. Master them, and you'll transform your service calls!