MRod = Marauder (rifle).... PRod = Marauder Pistol.... BRod = Marauder with a Bottle on it (a tank, regulated or not).... I plan one of each.... Bob
One more little trick I should mention.... I use this to dress the seat inside the valve, to get it perfectly square to the valve stem hole....It is a tiny octagon of 400 grit Wet-or-Dry sandpaper, with a 1/8" hole (same size as the valve stem) punched in the middle, with the flats of the octagon a whisker larger than the poppet OD.... On the back of the sandpaper is a piece of double-sided sticky tape to stick it to the sealing face of the poppet without damaging it.... Basically it makes a perfect lapping tool.... You slide it into the valve, the stem sticks out the back, and you grip that with the chuck of a portable electric drill.... Using low speed, pull gently on the drill, run it a few seconds forward, then reverse.... forward then reverse.... 2 or 3 times.... Remove the poppet and check the seat.... You should see a uniform dull area around the throat where it has been sanded.... If there is a gap in the dull area on one side, repeat.... If it's really bad, use a piece of 220 grit first.... You can finish with 600 grit, but I usually jump right to my polishing compound....I use a metal polish called "Solvol Autosol".... It comes in a tube like a toothpaste tube, and is a white paste with a very fine abrasive in it.... Put a dab on the sealing surface of the poppet, drop it into the valve, and use the electric drill just like with the sandpaper above.... I find it works better on a higher speed, and pulling a bit harder.... A few seconds forward, then a few seconds reversed, and repeat 3-4 times.... Disassemble and inspect both the seat and poppet.... Both should have a shiny line all the way around.... Carefully clean off ALL the grit, assemble, and use the drill to put a final burnish on the parts.... That shiny line all the way around both parts is the indicator that you have a perfect seat.... If it leaks after that, I will be shocked.... particularly after you fire it a few times....Bob