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Posted: 8/13/2005 5:57:55 PM EDT

I saw this covered somewhere, but I haven't found it using the search function.

I have a spare bolt carrier I'm building up and the bolts look like they were "staked" with a center punch very lightly--once on each side of the bolt head--and are not very tight.

I have tightened the bolts with an Allen wrench and want to know the best way to stake them so they won't give me any trouble.

Thanks!
Link Posted: 8/13/2005 6:24:51 PM EDT
My CMT bolt/carrier I just got from Bravo Co. looks like it was staked with a sharp bladed chisel.

A straight stake on both sides of the allen head screw perpendicular to the firing pin.

WIZZO
Link Posted: 8/13/2005 6:32:32 PM EDT
Link Posted: 8/13/2005 6:35:20 PM EDT
We restaked my friends Bushy for a second time . Really peened em over 4 points to each bolt head. So far so good.
Link Posted: 8/13/2005 7:01:36 PM EDT
Link Posted: 8/13/2005 7:29:50 PM EDT


Thanks for the quick replies!

Yeah, I'm not a big fan of Locktite on anything that gets real hot. I just want it to stay together--seems like I've heard horror stories of these things coming off and causing damage.

I've had this carrier laying around for years and finally got a CMT bolt for it. When assembling it, I noticed the light stake marks around the bolts and checked them for tightness. They were loose.

Looks like I'll break out the chisel and have at it!
Link Posted: 8/13/2005 7:44:59 PM EDT
Link Posted: 8/13/2005 8:16:02 PM EDT
While I don't disagree with HeavyMetal, this is what my new one looks like.



CMT most likely did it with a machine, so they're gonna be more precise. The center punch sounds like it would work well.

WIZZO
Link Posted: 8/14/2005 6:21:49 AM EDT
I use a "chisel" tool ground from a 1/4" drill bit. For me, works much better than a center punch.
Link Posted: 8/14/2005 2:25:11 PM EDT

Originally Posted By WIZZO_ARAKM14:
While I don't disagree with HeavyMetal, this is what my new one looks like.

img.photobucket.com/albums/v702/WIZZO_ARAKM14/DCP_0983a.jpg

CMT most likely did it with a machine, so they're gonna be more precise. The center punch sounds like it would work well.

WIZZO



WIZZO,

I have heard two different theorys on staking. One is like yours where a tool with a flat surface is used to strike across the entire surface of both the key and the screw.

The I have heard you are not to touch the screw with the tool If you look at the sides of the screw, they have small ridges in them. The proper way to stake is to mash some of the material from the key into the side of the screw so the ridges will hold the screw in place and prevent it from turning.

I dont know which way is right. I guess whatever holds the scre win place.
Link Posted: 8/14/2005 5:37:33 PM EDT
Don't be afraid to move some material, roll that edge right into the cap screw' radius on the head so as to keep the screw from going anywhere.

Link Posted: 8/14/2005 8:20:22 PM EDT
Dace,

I'm no expert, and I haven't staked any of these, so I was just going with what I had in front of me.

I'm not sure which way is proper either, but I think you should be good to go as long as the screws are held in place securely.

SBR7_11 seems to have some really good stakes. Those don't look like they're going anywhere.

WIZZO
Link Posted: 8/15/2005 1:26:04 AM EDT
Link Posted: 8/16/2005 2:09:14 AM EDT

Originally Posted By WIZZO_ARAKM14:
My CMT bolt/carrier I just got from Bravo Co. looks like it was staked with a sharp bladed chisel.

A straight stake on both sides of the allen head screw perpendicular to the firing pin.

WIZZO



I just picked up a CMT bcg from G&R Tactical, that is exactly how mine is staked.
Link Posted: 8/16/2005 2:28:17 AM EDT
Link Posted: 8/16/2005 7:21:50 AM EDT
[Last Edit: 8/16/2005 7:22:19 AM EDT by mongo001]

Originally Posted By SBR7_11:
Don't be afraid to move some material, roll that edge right into the cap screw' radius on the head so as to keep the screw from going anywhere.




This is the recommended staking repair in the tech manual. Try to move metal from the key into the screw, essentially locking the screw in place.
Link Posted: 8/16/2005 6:55:43 PM EDT
[Last Edit: 8/16/2005 6:56:10 PM EDT by Tweak]
Link Posted: 8/16/2005 6:59:37 PM EDT

Originally Posted By Tweak:
that's field replacement staking. if you're in the field or, like unit armorers, lack a proper punch you use that.



Ya................ok, Mr. Techincal.




Link Posted: 8/22/2005 10:49:27 PM EDT
Link Posted: 8/23/2005 5:24:05 AM EDT

Originally Posted By Tweak:
photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=29348

broken 1/16" pin punch ground to shape

photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=32289

proper (factory replicates) staking




yes, this is the way that I do it also. I also used a droked punch that I ground down. I lay the carrier on its side on a piece of cardbord and put one foot on it to hold it still. The key is also touching the cardbord so it dosent moove when you punch it. Get the punch just right and give it a wack with a hammer. It looks the best by far.
Link Posted: 10/11/2005 9:59:27 PM EDT
Link Posted: 12/2/2005 8:27:44 PM EDT
Link Posted: 12/3/2005 12:17:25 AM EDT
A diamond point chisel works like a charm.
Link Posted: 12/3/2005 2:53:59 PM EDT
tag
Link Posted: 12/4/2005 8:22:36 AM EDT

Originally Posted By ar_mcadams:

Originally Posted By Tweak:
photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=29348

broken 1/16" pin punch ground to shape

photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=32289

proper (factory replicates) staking






yes, this is the way that I do it also. I also used a droked punch that I ground down. I lay the carrier on its side on a piece of cardbord and put one foot on it to hold it still. The key is also touching the cardbord so it dosent moove when you punch it. Get the punch just right and give it a wack with a hammer. It looks the best by far.




top punch for carrier key and bottom punch for castle nut to end plate on car stocks.





Link Posted: 12/18/2005 5:14:41 AM EDT
Link Posted: 12/18/2005 5:49:11 AM EDT
This is a bit off topic.

In addition to staking the bolts, would it be OK to use red LokTite or Devcon Steel Putty on the threads for added security?
Link Posted: 12/18/2005 6:03:44 AM EDT
Link Posted: 12/18/2005 6:06:37 AM EDT
Thanks. That answers that question. No need to reinvent the wheel; I'll stick to what is proven.
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