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I made this at home after seeing that they are 15-20 dollars online and even more expensive at stores. I made it for around 6$ and had some ...
2- brass hose barbs (whatever size you need for air hose you're using) 1- brass coupler (same thread size as hose barbs) 1- pencil eraser 1- spring 1- ...
Thread one hose barb into coupler. I made an arrow on mine to show air flow.
Put pencil eraser into the spring and insert rounded thumb tack.
Super glue o-ring onto other hose barb. Make sure it is slightly smaller than the rim of the barb.
Put spring into coupler and screw in other hose barb. Make sure the thumb tack's rounded edge is facing the o-ring. This will create a seal when air ...
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