Build a Paintball Mine

Step 7: Mine Top

Drill a pilot hole in the exact center of the threaded plug.. Then drill a ¾” hole through the plug. Our plunger will be going through this hole, but unfortunately the ½” PVC has an outside diameter that’s a little bit more than ¾”  You will have to enlarge the hole just enough so that the plunger will slide through it freely, but not too loose that it wobbles. I used a dremel with a sanding wheel. You could also try a large rasp, or heavy grit sanding paper wrapped around a dowel.