REM 721 Ejector Problem
- Thread starter nmkid
- Start date
We need pics to see what we are trying to fix.
It'll save your ass in situations like this. Blowing up a cutter in a relatively deep hole, in a part you want to be good when you're done, is no fun. You could plunge down below the cross pin with a cutter 2/3ds the size of the ejector, and then hit it with a micro torch to make the epoxy let go. No need to get it hot enough to mess with the braze joint or heat treat. Clean everything up with drill bits and reamers.The epoxy method sounds worth trying. "Hold my beer and watch this".
Insert 'coffee' if I'm sayin' it.
AlNyhus
Silver $$ Contributor
The ejectors run right at .135-ish and the holes are right at .140 via my pin gauges. As a dirt clid non-machinist, I'd go right down with a .125" carbide ball end mill until it cleared the pin. A square faced end mill with no clearance on the sides for swarf to go sounds like a recipe for broken tooling. As Dave mentioned earlier, it's once you get past the pin, life will be good. Soft light will filter through the windows, a Swedish beauty will bring you a bottle of Perrier and AC/DC will hammer out 'Hell's Bell's' . 
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nmkid
Gold $$ Contributor
I tried several times but, I couldn't get a good picture. All you can see is a boogered-up pinhole. I do have a method where I can take extremely close-up pictures using a magnifying glass from my metal detecting days for coins. But, I am alone and I need 3 hands for that.
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Sniperhandle
Silver $$ Contributor
That's actually a great idea.
nmkid
Gold $$ Contributor
I contacted one of those fancy companies in Reno yesterday, (don't know if they had a fiber laser) and they said, no thanks on trying.
AlNyhus
Silver $$ Contributor
Is the ejector hole in the bolt face buggered up? Where's the upper end of the ejector at, relative to the bolt face....still almost flush with the bolt face?
LVLAaron
Gold $$ Contributor
What you need is one of those not fancy rednecks
nmkid
Gold $$ Contributor
Somewhat on your first question. Yep, a tiny bit below flush.
nmkid
Gold $$ Contributor
Well, folks, Walt Krafft (forum member) at Ozark Precision Rifles got the bolt today...And it is done! He had sent me a message saying he would like a crack at it. He had to order a new ejector kit and it will also necessitate a slighter bigger(diameter) pin as the pin-hole was kind of buggered up. I already let my nephew know and he was beyond overjoyed.
THANK YOU WALT!!
THANK YOU WALT!!
-AlMounted it verticle and drilled out the ejector. They are pretty soft. Then had to clean out the cross pin hole. It was pretty buggered up. It will need a 3/32 pin instead of the 5/64 pin.
shortgrass
Silver $$ Contributor
So, it wasn't rocket science after all, and there was no need to call Elon Musk...... A straight forward gunsmith repair. No EDM, no fiber laser, just some common sense. A problem any old school gunsmith would tackle, as we've seen crap like this on an almost daily basis.
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