I was searching for protective spark plug carrying cases for use when dirtbiking with my kids. Since we have 4 bikes, I needed a variety of sizes for all the different plugs. Many of the designs out there were either too bulky or didn't fit correctly for various plugs or configurations. I took inspiration from user Nick_Groot on the top cap design with the grip surface so you could use the top to start a plug into an engine. I have provided these 3: 14mm thread - 21mm hex 12mm thread - 18mm hex...
Topics: Sport & Outdoors, thingiverse, spark plug box, sparkplug, spark plug holder, stl, Spark Plug