In my search to find a 45* chamfer cutting tool to time a gas cylinder lock. I found this. They're NOS 50+ years old, parkerized finish, and they must have cost a fortune when they were made. They look like an armorers tool. Anyway, cuts the chamfer beautifully. Times the lock in a minute. It's even center drilled top and bottom.
http://www.ebay.com/itm/45-Degree-Ch...item2ec114c61d
Here's a post on gas lock timing.
http://m14forum.com/gus-fisher/11791...-gas-lock.html
I dont see that they are for timing a gas lock,just deburring the holes. Even if you would ream the chamfer the locks would still hit and stop on the flats or am I missing something???
Damn Bill, I even posted the thread that you started on the subject! The gas lock has a 45* bevel on it as does the front of the gas pads. The two tapers mate under ideal conditions. Anyway, if you remove the gas cylinder and tighten the lock it should mate with the barrel at about 5:30. Cutting the countersink on the gas lock will allow you to achieve the perfect timing. Some gas locks will also need the rear face cut which I found was easy just by running the lock across the face of a sharp mill file.
Gus's answer.
Gus Fisher
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Sanding metal off the back of the Garand GC Lock is just about the last thing you want to do to fit a lock and I’m sure Hook would agree it is far better to have a lock that fits correctly.
The problem with sanding the rear of the lock is keeping it flat to the surface of the face of the GC AND you are cutting through the hardness at the back, if the lock is hardened.. It is actually better to file the back with a wide file that cuts the whole surface of the lock evenly, if you are going to do it.
Yeah, Hook can probably do it on a belt sander, BUT you have to remember when he was learning to do it, there were plenty of locks WHEN he screwed up some of the locks he used the belt sander on.
The OTHER way to do it is cut the chamfer in the lock a bit deeper with something like a 12 flute carbide crowning tool. Personally, I believe that is better because you don’t have to worry about messing up the fit of the back of the lock to the front of the GC. I did that on a very few Trophy Garands I went over and rebuilt before the FINE Folks at Crane sent us a whole batch of extra Garand GC Locks to swap as required.
Ahh, I understand, I wasnt thinking right.... Again
Is this tool the right size for a lock??
Thanks!!
The pilot is a little bit smaller than the hole in the gas lock, but it seems to cut straight held by hand. I suppose a piece of brass tube on the pilot will make this thing perfect.Quote:
Originally Posted by Orlando
Sold out.
Interesting that Ol'Ham jumped right in and was put in his place.
Oh well, snooze ya looze, looks like I missed out
Sold out because someone probably bought the lot to resell at $100 each!
If they were that smart, that's smart.Quote:
Originally Posted by Dave
I waited to long and missed out on getting one of these neat tools. The other day I received a package in the mail from Stu
http://i47.photobucket.com/albums/f1...Picture747.jpg
Just got done tring it out to see how well it works
Started with a lock that didnt time
http://i47.photobucket.com/albums/f1...Picture746.jpg
Added a few drops of oil to the cutter and twisted it a few times
http://i47.photobucket.com/albums/f1...Picture748.jpg
http://i47.photobucket.com/albums/f1...Picture750.jpg
Lock now times at 5:30
http://i47.photobucket.com/albums/f1...Picture749.jpg
Wasnt sure how well it would cut with a hardened gas lock but went through it like butter
Thanks Stu!!