Diy Sheridan Valve Tool

G'day, I'm Nef, and this is a simple guide on building your own sheridan valve tool. The sheridan valve is held in place by a brass grub screw with roughly an 8.5 by 8.5 millimeter (or 1/3") filleted square center. A round post with a diameter of roughtly 7mm (or 9/32") sits in the middle. The tool we'll be making is out of a quarter-inch hex bit holder. I suggest using the cheapest, softest one you can find. You'll also need a drill, a 7mm or 9/32" twist bit, and a grinder. Scribe a line along the circumference of the bit 6 to 8 millimeters (or 1/4") from the tip. Put on your safety gear and run the drill through the inside of the bit holder to the bottom of the hex section. You'll be able to drill though quite fast, though it's a good idea to take your time and use a little bit of lube. Finally, grind down four edges on the bit holder, aiming for a 8.5 by 8.5 millimeter (1/3") square cross section. You'll only need to take a millimeter or two of material off, so be sure to leave a nice round on each corner. And that's it, you just saved yourself $20. To get the rest of the valve out I suggest presssing a used 12g CO2 cartridge through from the front. That way you wont wreck your peirce pin. Have fun!