Poor cleaving is one of the most common causes of poor splice results when using a fusion splicer. When cleaving isn't done correctly, it can lead to gaps, misalignment, or even an incomplete splice, which can compromise the integrity of your network. But fear not; there are simple troubleshooting steps you can follow to improve your cleaving process and ensure a high-quality splice every time. 
 

Check the Cleaving Tool Condition 

A dull or damaged cleaver is one of the leading causes of poor cleaving results. If the blade isn't sharp enough, it won't create a smooth, clean cut on the fibre, leading to splice failures. It's essential to regularly check your cleaver's blade condition and replace it when necessary. Most cleavers offer an indicator to show when the blade is nearing its end of life. 

Tip: If your cleaver blade is dull, it's like trying to slice bread with a butter knife, it's just not going to work. 

Ensure Proper Fiber Preparation 

Before cleaving, make sure the fibre is properly stripped of its coating. The cleaver will struggle to create a clean cut if any coating residue is left on the fibre. Double-check that the fibre is completely free from dirt, oil, or debris, as even a speck can lead to poor cleaving results. 

Correct Cleaving Angle 

Another culprit behind poor cleaving is the angle at which you cleave the fibre. An improper cleaving angle can lead to uneven fibre surfaces, which makes it difficult for the fusion splicer to align the fibres. The cleaver should produce a perpendicular cut to the fibre to ensure proper alignment during splicing. 

Check the Fiber Placement in the Cleaver 

Sometimes, it's not the cleaver that matters but how the fibre is placed in it. Ensure the fibre is securely placed in the cleaver with enough tension to keep it in place but not so much that it bends. Incorrect placement can cause an uneven cut, leading to splice failure. 

Use the Right Fiber Cleaver for the Job 

Not all fibre cleavers are made the same. Cleavers are designed for specific fibre types, such as single-mode or multi-mode. Using the wrong cleaner for the kind of fibre you are working with can lead to poor results, so always ensure you have the right tool for the job. 

 

FAQs 

What's the most common reason for poor cleaving results?  

The most common reason is a dull or damaged cleaver blade. If the blade isn't sharp enough, it can result in uneven fibre cuts, negatively affecting the splice. 

How often should I replace my cleaver blade?  

Cleaver blades should be replaced when they show signs of wear, such as leaving rough edges on the fibre or failing to create a clean cut. Some cleavers have indicators that show when the blade is ready to be replaced. 

Can poor cleaving damage the fusion splicer?  

While poor cleaving itself doesn't directly damage the fusion splicer, poor cleaving results can cause splice failures, which might require reworking and additional time, which may cause unnecessary wear on the splicer. 

Why is fibre preparation so essential before cleaving?  

Proper fibre preparation removes any dirt, oil, or coating residue that could interfere with cleaving. A clean fibre ensures the cleaver can cut it properly, which is crucial for a good splice. 

Can I use any cleaver for any fibre type?  

No, different cleavers are designed for various fibre types. Using a cleaver incompatible with the fibre type you're working with may result in poor cleaving results. Always check the specifications before use.