How to Make a Magnetic Drain Plug

A magnetic drain plug.
  • 1-2 hours
  • Intermediate
  • 100-150
What You'll Need
Metal brush
Drill bits
Oil drain plug
Neodymium magnet
Weld (JB)
Drill press

You prevent accidents on the road by being an attentive driver, but prevent motor problems by making your own magnetic drain plug. When it comes to do-it-yourself, or DIY, usually there are tools all ready in existence to help out with any problem. Most DIY tasks are to fix an area or prevent further damage from wreaking havoc. However, when it comes to helping your car, there are a plethora of preventative DIY tasks and measures.

The engine of every car will, throughout is hopefully long life, shed tiny flakes of metal. Much like the drain plug itself, a tiny part of the car, every small feature is just as important as the large ones. In other words, do not underestimate the damage supposedly insignificant, or tiny, metal scrapings can present. Damaging the motor, these “tiny” pieces of metal will cost you anything but a tiny amount of money. However, you can do something to prevent this damage from resulting—placing a magnet. A simple yet effective magnetic drain plug will pick up almost all shards of metal shed from the engine.

Step 1 - Prepare

The first step in creating something new is using something old, so acquire a normal oil drain plug. Raw materials are not needed to create something entirely new. Clean this drain plug as well as you can. Every bit of dirt, grime, and gunk may affect the end result’s effectiveness. Use the metal brush to get the best results. Measure the magnets. Then, locate a drill bit that is the exact same size.

Step 2 - Get Started

Punching a hole into the drain plug will prevent it from wandering about. Drill a hole into the drain plug deep enough for the magnet to stick out just a bit. Clean out all the metal shavings.

Step 3 - Finish

Place some adhesive into the hole that was just drilled. Place the magnet in said hole. If the created hole is still too small, use the C clamps to press it in. Fastening the magnet as tight as you can will ensure safety.