Bolt Jeweling - Part 5
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Part 1.
Now lets do a rifle bolt.
Note that the index bolt has a
red "point" lined up with the vertical line on the end of the jig,
and that the edge of the jig is lined up with a red line on the spacer gauge.
FIRST, POLISH THE BOLT. IF THE
BOLT DOSE'NT SHINE LIKE A MIRROR THIS WON'T WORK!!!!
Put your polished bolt into the
jig, line up a red or black mark on the index bolt and tighten the index bolt
nut. If you used 1/2-inch bolts the nut will require a 3/4-inch wrench. While
holding the nut next to the firing pin hole, run in the bolt with the wire brad
until the rifle bolt is held firmly, then tighten the outside nut on that end.
Place a wire brush in the drill chuck and move the jig on the drill table until
the brush is centered over the bolt.
Place the spacing gauge next to
the jig and clamp in place with two C-clamps
The jig should slide against
the guide so that the brush can be positioned anywhere along the length of the
bolt.
The extractor should be held in
the closed position with tape and the rifle bolt should be "buttered"
with abrasive compound. The rotating brush is lowered against the rifle bold
for about 15 seconds, then raised. THEN THE JIG IS SLID ALONG THE SPACER GAUGE
TO THE NEXT SAME COLOR LINE. IF THE INDEX BOLT HEAD IS AT A RED MARK, USE THE
RED LINES, IF BLACK, USE BLACK. Go from one end to the other, stopping at each
SAME COLOR line and lower the brush for 15 seconds and move again. When you get
to the end, rotate the index bolt (and the rifle bolt) from one color to the
next. That is move from a point (red) to a flat (black), or from a flat to a
point. Then move to the jig to the new color lower the brush and go ahead. You
can jewel the extractor, but stay away from the other lugs and ridges, and keep
away from the locking lugs, You don't need to jewel
the swell at the cocking cam end as this is hidden by the shroud.
Now clean the bolt VERY WELL,
removing the extractor collar and cleaning under it as well.
Steve Wagner
Bellwood PA