This step-by-step DIY guide to making an Ethernet cable (Cat5e or Cat6) will help you create a reliable RJ45 network connection at home. While we use Cat5e in this tutorial, the same method applies to Cat6 or other Ethernet cables.

10 Easy Steps to Make an Ethernet Cable

STEP 1: Cut the required length of cable
Add a few extra centimeters just in case. If you are installing an RJ45 boot, slide it onto the cable before stripping the wires, making sure it is facing the right way.

STEP 2: Strip the outer jacket
Use a wire stripper to carefully remove the outer sheath without damaging the twisted pairs inside. You should see 8 wires in 4 color-coded pairs.

STEP 3: Inspect the wires
Check that no copper conductor is exposed. If copper is visible, cut that section and repeat step 1. Exposed copper can cause connection issues.

STEP 4: Untwist and flatten the pairs
Straighten the pairs and cut them to about 20 mm in length to make them easier to insert into the RJ45 connector.

STEP 5: Choose the wiring standard
There are two common standards: T568A and T568B. Use T568B for straight-through cables (PC to router) or mix A/B for a crossover cable. In this guide, we use T568B.

STEP 6: Align the wires
Hold the wires flat and parallel, then trim them evenly to 12.5 mm. Ensure the cable sheath enters the RJ45 connector by about 4 mm for proper grip.