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How to Crimp Your Own Ethernet Cables
First Steps: Snipping and Stripping
November 4, 2009
We live in an increasingly do-it-yourself world. We can check out our own groceries, pump our own gas and diagnose our own OK, maybe not that last one. But for the do-it-yourself type, making your network cables is no problem. These days, ready-made Cat 5 cables the standard kind used for most Ethernet networks are relatively easy to find at most electronics stores at reasonable prices. So why assemble your own network cables? It may not be something you do everyday, but having the supplies and know-how to whip up a network cable on the spot can be very handy.
Perhaps you want to run custom lengths of cable, whether very short or very long. After all, coiling a 25-foot cable when you need only two feet seems kind of silly, not to mention a decorating don’t. On the other hand, if you want to route 50 feet of cable upstairs through a closet ceiling, you can minimize your drill hole by fishing through bare ends and crimping on your connectors later. Or, maybe you just need a network cable right now and it isn’t convenient to run to the local electronics depot. �With 1000 foot spools of bulk cable running under $40 on eBay, it requires little investment to keep a supply on hand.
Even if you’re like me and wind up turning most do-it-yourself handyman projects into some kind of exotic folk art, assembling a network cable is surprisingly easy. With a little practice you can finish the job in less than ten minutes.
You need Cat 5 cable, of course. You can buy it in bulk at electronics stores and online. Or if you already have some cable with damaged connectors, snip them off and start anew. Cat 5 comes in a wide variety of jacket colors, but is most commonly found in blue – use any one you like.
You also need RJ-45 connectors – the plastic plugs at the end of the cable. You can also find these at many electronics stores in packs of 25, 50, or 100, often for less than $10.
Most off-the-shelf network cable uses stranded wires, but solid wires are also available and ar sometimes preferred for long or in-wall runs. Check with the vendor to ensure that your RJ-45 connectors are compatible with your stranded or solid cable some connectors accommodate both while some do not. A mismatch could cause unreliable performance.
Finally, you need a crimping tool that supports 8-conductor modular plugs, sometimes also called an RJ-45 crimper. Radio Shack’s “Professional Crimping Tool” (Item #279-405) will do the job for $33, but you can find equally good solutions for half that price on eBay and at online retailers.