How to Sleeve Computer Cables

A fundamental component of computer building and modding is cable management. PC enthusiasts and modders complete this tedious process of sleeving cables merely for improved aesthetics. However, cable management and sleeving will often improve a computer's existing air flow, and decrease system temperatures in poorly cooled systems. Regardless of the reason, cable sleeving is a popular trend in the PC modding market that has been thriving for years. This guide will help you sleeve all of your own, internal, computer cables.

Note: this guide is geared towards the sleeving of a spliced cable with two wires. Apply the steps according to your own sleeving project.

Steps

1. Gather the necessary items as shown in the "Things You'll Need" section.
2. 
   Determine your approach. Do you want to sleeve a cable by splicing it, removing pins from connectors, or in place over the existing connectors? Splicing is a good option if you plan to change the length of the cable at the same time, while removing pins from connectors (to avoid forcing the sleeving over connectors) is the cleanest approach. Some connectors may be small enough to sleeve a cable in place.
3. 
   Cut sleeving to length. As sleeving expands around cables its length shortens, so be sure to match the length of the sleeving while on the cable itself. Leave approximately 1/4" to 1" (3 to 12mm) of cable exposed at each end. This exposed section will help the heat-shrink tubing to grip both the cable and the sleeving. If applicable, it should also provide enough slack to reinsert pins into their connectors. As your sleeving skills improve, you'll be able to guess the correct length to cut.
4. 
   
   Singe the sleeving's ends. To avoid fraying and un-weaving, use a heat source, such as a lighter, to singe both ends. Most sleeving cut from a manufacturer or distributor will already be singed at the ends. Whenever you make a cut into the sleeving, singe the ends on both sides of the cut.
   
   The first photo shows frayed edges of sleeving that has not been singed or treated in any way. The second photo shows sleeving with a singed end to keep it from fraying.
5. Install sleeving. Put the cut sleeving on the cable, pushing it up the cable in a fashion of movement similar to an inchworm.
   
   
   1. Squeeze down to hold one side of the sleeving in place with your first hand.
   2. Use your other hand to push the sleeving together.
   3. Release the grip of your first hand.
   4. Repeat until sleeving has been completely installed.
6. 
   Cut heat-shrink tubing. You'll need two pieces of approximately 1/4" to 1" (3 to 12mm) long to cover the ends of the sleeving. The tubing should be large enough in diameter to clear the sleeving. Slip both of them over the cable and sleeving, one at a time. Push them all the way to the end of the cable that doesn't have pins, or the end that will be completed last.
7. 
   Pull back sleeving. If your sleeving is long and the other side of your cable attached to something, pull back sleeving to give yourself room to work. Use wire ties (twisting variety) or a pair of locking pliers to hold back sleeving.
8. Attach wires if you're sleeving a spliced cable.
   
   
   1. 
      Prepare cable ends before rejoining the wires. Strip the wire insulation off of each end, then twist stranded wires together to avoid separation. Cut two pieces of heat-shrink tubing to cover each soon-to-be reconnected wire. The heat-shrink tubing should be as long as the stripped portion of wire strands, plus 1/4" (3mm), and should be large enough in diameter to clear the wires once twisted together. Slide the heat-shrink tubing over each wire as shown in the photo.
   2. 
      Connect the wires by twisting the stripped portion of each wire's ends together. For solid wires (non-stranded), twist them together with a pair of small, needle-nose pliers.
   3. 
      Secure and insulate connections. Move the two pieces of heat-shrink tubing to cover the stripped sections of wire that are twisted together. Make sure there is enough tubing to cover all exposed wire as well as overlap at each end. If not, undo the wire connection and re-twist it to make it shorter. Use your heat source to shrink (activate) the tubing until it fits snugly over the connections.
9. 
   
   Release sleeving. Note: if you're sleeving a cable with removed pins, now is the time to reinsert the pins into their connectors. Remove wire twist or locking pliers and release sleeving, allowing it to extend over the entire cable. If the sleeving is now too long, use a pair of diamond edge cutters to snip away the excess sleeving. Remember to leave at least 1/4" (3mm) of cable exposed for heat-shrink tubing.
   
   The first photo shows sleeving that was cut too long for the cable. The second photo shows the sleeving after it has been cut down in size. If you've correctly estimated the length of your sleeving ahead of time, you won't need to make these adjustments.
10. 
    Expand the sleeving. Hold on end of the sleeving, then pull on the other end to expand the sleeving as much as possible. If you selected the right sized sleeving, it should provide a snug fit around the cable. For larger cables, or if desired, attach a nylon wire tie (zip tie) over each end of the sleeving. This will ensure the sleeving does not move unless forced.
11. 
    Shrink the tubing. Position the two heat-shrink tubing pieces, then activate them with your heat source. Be sure to keep the sleeving taut around the cable during this step. Repeat all of these steps for each cable you want to sleeve.
    
    
    
    

Things You'll Need

• PC cables you want to sleeve
• Sleeving Tools
  
  
  • Wire stripping and cutting tool
  • Heat source such as a lighter or heat gun
  • Scissors to cut sleeving and heat-shrink tubing
  • Diamond-edge cutter (optional)
  • Pin removal tool or Jeweler's screwdrivers, depending upon what you're sleeving (optional)
  • Locking pliers to hold back sleeving (optional)
  • Needle-nose pliers have many uses here (optional)
    
    
• Sleeving Consumables
  
  
  • Cable sleeving, also sold as part of a sleeving kit
  • Heat-shrink Tubing, also sold as part of a sleeving kit
  • Nylon wire-ties, also sold as part of a sleeving kit (optional)
  • Plastic/paper-coated wire twists to hold sleeving in place (optional)

Tips

• The larger the sleeving (diameter), the easier it is to push together into a wider diameter. This also applies to flexibility. Sleeving manufacturers will typically use the same gauge strands on a specified range of sleeving sizes. The physical properties of sleeving will change dramatically when both the strand gauge and strand type changes.
• Purchasing sleeving in a kit will save money when the total amount of sleeving you receive is your focus. However, sleeving kits may not provide enough of a specific diameter sleeving for your needs. If you're sleeving the entire inside of your computer, purchase two 'PSU sleeving kits'.
• 
  
  If the heat-shrink tubing you have is too small in diameter for its application, it is possible to stretch it. Use a pair of needle-nose pliers to slowly and carefully stretch the tubing from the inside out.
  1. Insert the pliers into the tubing as far as possible.
  2. Pull the pliers apart to open up the ends.
  3. Stretch the tubing a little at a time, but avoid puncturing or tearing it.
  4. Close the pliers and rotate the tubing slightly.
  5. Repeat, then repeat this process for the other side of the tubing.
• Using Jeweler's screwdrivers and staples for connector pin removal will work, but a specialized pin removal tool set is far better. Most sets can be found online for $20 USD or less and will contain a Molex pin removal tool, ATX pin removal tool(s), and floppy/fan pin removal tool(s).
• Small diameter brass tubing from a hobby supply or hardware store will also work to remove the pins. These generally cost roughly $2.00 US. For example, 3/32" ID tube works for Molex pins.
• If one end of a cable is snagging on the sleeving, try wrapping it in scotch tape. Any tape will help, but scotch tape is easier to remove when you're finished; it won't leave behind any sticky residue.
• Cables that are significantly smaller in diameter than the sleeving you're installing may not require an 'inchworm'-like installation. The sleeving should slip easily over the cables.
• Keep stripped wires strand clean by drying your fingers before you twist ends together. Transferring too much oil from your skin will promote corrosion and induce additional resistance. If you find this task difficult, use a contact cleaner to spray the wire ends.
• 
  To complete a 'stealth' look of larger sleeved cables (such as an ATX power cable), use rubber electrical wrapping tape. This is thicker, with more of a matte color, when compared to regular vinyl electrical tape. However, rubber wrapping is much more expensive. Use sparingly to wrap the ends of a cable where sleeving and heat-shrink tubing will not cover every wire.
• For aesthetic value, use similar color connectors, sleeving, and heat-shrink tubing. Sleeving kits often have similar heat-shrink tubing and sleeving colors, even if they don't match perfectly. However, black heat-shrink tubing will typically work well with any color theme. Match the colors to the color theme of your computer, but do not mix more than three colors. An example of a three color theme (black, green, and white) is shown in the images below.

Warnings

• Apply heat accurately when shrinking the tubing to avoid overheating the sleeving. Doing so may burn a hole in the sleeving before you realize your mistake. This is especially problematic where the heat-shrink tubing meets the sleeving. Exposed sleeving will melt, but sleeving covered in heat-shrink tubing should be more resistant.
• Be careful when singeing the sleeving ends. Applying heat for longer than a few quick passes will melt the ends together.
• Wiring, connectors, heat-shrink tubing, and sleeving are all flammable if exposed to a flame or heat for an extended period of time.