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One of the Last Entreprise receivers

This is a discussion on One of the Last Entreprise receivers within the Gunsmithing forums, part of the M14 M1A Forum category; I don't know if it's already been stated but did they use 8620?...


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Old January 6th, 2017, 10:11 AM   #121
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I don't know if it's already been stated but did they use 8620?

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Old January 6th, 2017, 11:32 AM   #122
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Yes, there old web page showed a 12lb rectangle billet of 8620 that they started with.

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Old January 8th, 2017, 05:58 AM   #123
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Milling the bridge back face and width.Will broach corners later.




[.com/user/metalsmitty45/media/DSCN5534_zpsrebchrkk.jpg.html][/URL]

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Old January 8th, 2017, 06:30 AM   #124
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Quote:
Originally Posted by IRON WORKER View Post
Originals were machined with a small right angle milling head. I'll be using a universal swivel joint extension and bearing mounted in passage .
What did you say?

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Old January 8th, 2017, 06:47 AM   #125
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Quote:
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What did you say?
Stay tuned my friend and "ye" shall see.

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Old January 16th, 2017, 05:47 PM   #126
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Short clip milling the mag well with extra length endmill .

http://vid9.photobucket.com/albums/a...pswkrevefu.mp4

Rouging out front bridge/rear mag well ,will go back and broach the corners with 45 degree tool steel.The bridge front just barely cleaned up with .010 to spare.





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Old January 16th, 2017, 06:02 PM   #127
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Keep it up can't wait until it's finished!

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Old January 22nd, 2017, 09:45 AM   #128
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Finished mag well ,will go back later and broach corners.
Attached Images
File Type: jpg 0122170918.jpg (31.8 KB, 25 views)
File Type: jpg 0122170919.jpg (23.3 KB, 26 views)
File Type: jpg 0122170959.jpg (28.2 KB, 26 views)
File Type: jpg 0122171103.jpg (27.0 KB, 26 views)
File Type: jpg 0122171104.jpg (27.2 KB, 24 views)

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Old January 28th, 2017, 04:07 PM   #129
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Line boring the rear end of bolt passage with universal joint/extension and square drive and brass bearing .First step using carbide single point tool followed by counterbore tool .Just a simple c-clamp hold bushing tight against bolt passage is all thats needed.

Tiny area that did'nt clean up on top corner because Entreprise got to close with roughing endmill. Once I cut firing pin slot and break edges it will be just like USGI.









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Old January 28th, 2017, 05:21 PM   #130
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Wow it's looking great!

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Old January 28th, 2017, 06:49 PM   #131
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Absolutely awesome........I wish I had the talent to even think about doing this sort of project.

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Old January 28th, 2017, 09:05 PM   #132
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Their M14 run was a nightmare. I don't know if the FAL run was any better ?

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Old January 29th, 2017, 06:32 AM   #133
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There has been a couple iffy areas that were close to not cleaning up . They got to close to finished sizes to be that aggressive.
This one is all on me though.

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Old January 29th, 2017, 08:24 AM   #134
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Quote:
Originally Posted by IRON WORKER View Post
There has been a couple iffy areas that were close to not cleaning up . They got to close to finished sizes to be that aggressive.
This one is all on me though.
I guess there is always hand work to finish those spots.

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Old January 29th, 2017, 06:18 PM   #135
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Finished the front of clip guide area which was part of the magwell broaching on USGI receivers.And top of magwell above left bolt channel.






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