I recently bought one of those portable tire inflators, and it reminded me of an old idea I had.
I take a 1/2" hole punch and punch holes in one gallon milk jugs. Then, I take a tire valve stem, (bought on Ebay for real cheap by the 100) and push it through the hole.
Then, I seal the inside of the stem to the cap with a little hot melt glue.
So now, screw on the cap good and tight, start up the inflator, and voila! Hard as a rock!!
The beauty of this is, that the caps can be used over and over again.
You can also do this with water bottles or any other plastic bottle.
They actually sell similar things for one liter soda bottles on Amazon too. They are LOUD!
I take a 1/2" hole punch and punch holes in one gallon milk jugs. Then, I take a tire valve stem, (bought on Ebay for real cheap by the 100) and push it through the hole.
Then, I seal the inside of the stem to the cap with a little hot melt glue.
So now, screw on the cap good and tight, start up the inflator, and voila! Hard as a rock!!
The beauty of this is, that the caps can be used over and over again.
You can also do this with water bottles or any other plastic bottle.
They actually sell similar things for one liter soda bottles on Amazon too. They are LOUD!