Making a water cooling heatsink is a great way to improve the cooling performance of your computer or other electronic devices. This comprehensive guide will walk you through the step-by-step process of creating a custom water cooling heatsink, providing detailed technical information and advanced tips to ensure a successful DIY project.
Gathering the Necessary Materials
To make a water cooling heatsink, you will need the following materials:
- A heatsink with wide spread fins
- Plexiglass or Lexan sheets
- JB Weld epoxy adhesive
- Two brass or plastic screw-in barbs
- Hacksaw
- Thin Sharpie marker
- Centimeter ruler
- Large quick-clamp
- Piece of wood with a straight edge
- Utility knife with a sharp blade
- Various drill bits
- Vinyl tubing to match the barbs
- Sandpaper (80-grit and 120-grit)
- File
- SOS pad
Planning the Water Routes
The first step in creating a water cooling heatsink is to plan the water routes inside the water block on the heatsink. It’s crucial to design a path that does not obstruct the flow too much or create areas where bubbles could form and become trapped.
When planning the water routes, consider the following factors:
– Minimize sharp turns or abrupt changes in the flow path to reduce turbulence and pressure drops
– Ensure the water flow covers as much of the heatsink surface area as possible for maximum heat transfer
– Avoid dead spots or stagnant areas where air bubbles could accumulate
Once you have finalized the design, use a hacksaw or other cutting tools to carefully cut out the heatsink to fit the planned water routes. Drill or cut the heatsink as needed to create the desired flow path.
Measuring and Cutting the Plexiglass
Next, measure the dimensions of the heatsink and use a Sharpie to trace the outlines onto the plexiglass or Lexan sheets. Use the straight edge of the wood as a guide to score and cut the plexiglass pieces to size.
It’s important to note that the threads on the barbs may be too tall, so use the hacksaw to cut them down, ensuring they are the same height.
Polishing the Heatsink
To ensure a good seal and thermal transfer, use an SOS pad to polish the bottom of the heatsink. Gently rub the surface in a back-and-forth motion until a good shine is achieved.
To test the integrity of the polish, place a drop of water on a piece of plexiglass, press the heatsink onto it, and flip it over. If the heatsink sticks to the plexiglass, the polish is sufficient. If not, continue polishing until the desired result is achieved.
Assembling the Water Cooling Heatsink
Dry-fit the plexiglass pieces to ensure they fit properly. If they are too big, use the file to shape them up. If they are too small, re-cut them. Remember to measure twice and cut once.
Once you are satisfied with the fit, begin JB welding the plexiglass pieces into place. Be sure to sand the two parts being joined to improve the adhesion. It’s best to do this in two steps, allowing the first layer of JB Weld to fully cure before adding the second layer.
Throughout the assembly process, try to keep the plexiglass clean, as this will result in a better overall appearance when the project is complete.
Leak Testing and Finishing Touches
Finally, connect your water block to a water pump or water source and let it run for an extended period, typically 24-48 hours. If the system does not leak, you’re good to go! If it does, add more JB Weld to seal any problem areas.
As an additional step, you can modify the cooling fins to build a maze-like structure, which can further improve the heat transfer efficiency. You can also solder a water pipe flat on the heatsink and use low-temperature solder paste made of tin and bismuth.
To complete the project, you can seal the entire assembly with silicone rubber for a professional-looking finish.
Remember, when making a water cooling heatsink, it’s crucial to take your time, plan carefully, and use the right materials and tools. Always follow safety precautions to ensure a successful and safe DIY project.