Cocking rings and cocking switch made easy

[Dave]

These pics, idea and parts were made by cutter. The cocking switch was made from 1/2 steel rod, and you could probably make the rings out of anything you wanted.

Instead of doing all the lathe work to the two pieces of tube and soldering them together. Just chuck up your stock in a rotary table and  get the right path. Cut the deep slot, a little deeper than normal for chip clearance for the next procedure. Once you get the slot, come back with a modified end mill and cut the path for your screw heads. (I will post a picture of the modified end mill if needed.)

Good work Dave, I\'ve been making one-piece cocking pieces and rings for a while now and they work much better, the old soldered ones seemed to have rust and corrosion from the flux and a rough surface for the screw heads to slide on (I went to stainless screws and turn a slight bevel on the under side and then polish them to a 600 paper), also radius the 3/8-24 bolts, instead of an angle like the drawings and then polish it bright.  I use disc brake grease mixed with Hoppe\'s gun oil for a lubricant.
I tried a set of bolts with 1/4-28 cam guides, just set the front cam out to .260, seemed to work okay but no real improvement.
Keep up the good work,
Dick C.
 

Looks good.  I\'ll have to consider that for my RG build when I get there.  Seems a lot more solid than the plan version.

THANK YOU VERY MUCH. Had thought about making them one piece but didn\'t have the know how
 Bill

Forgot to ask if you would post the modified end mill. THANKS
Bill

[Dave]

I\'ll post it later today

I\'m guessing it looks a little like a t-slot cutter.  It\'s a little hard to tell, but the tall part of the angled segment is cut wider to fit an unmodified end-mill shank, right?

[Dave]

The mill, this was also made by cutter

Well that would have saved me hours of work! Good info, Zed

Does the narrow part of the slot in the cam need to be right at 0.14\" wide?  I was thinking it\'s a lot easier to cut 3/16\" or 5/32 that deep, but it would allow for more slop as well.

[cutter]

I used a 9/64 carbide endmill and cut .300 deep.
10 passes @.03  No Problemo.
Good Luck

One more question please. How did you reshape the end mill?
Bill

[cutter]

1/4  X 6  grinding wheel , a spin fixture , and a 5C collet.

Shred, the dia. of the screw head is more important, a little \'slop\' in the slot is okay as the rotation and cam control the bolts path, the threads won\'t contact the slot if your cocking switch and recoil plate path are correct.  The screw head must fall smoothly thru the hole in the path to fire the gun, but not small enough to get out of the path.
Dick C.
 

Here is how I make mine, all one piece, even the bolts.

Here are the rest of the pictures.

dburn
I really like your one piece bolts, Could you explain your how you machined them. Specifically the semi round portion of the front.

Thanks
Mike