One of the Last Entreprise receivers - Page 6 - M14 Forum

M14 Forum


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; Next few set ups I'm roughing out op rod slot and slot entry hole ,locating zero with edge finder. I use dial and digital indicators ...


Go Back   M14 Forum > M14 M1A Forum > Gunsmithing

785Thanks
Reply
 
LinkBack Moderator Tools Display Modes

Old November 26th, 2016, 04:09 PM   #76
Lifer
 
IRON WORKER's Avatar
 
Join Date: Mar 2005
Location: USA
Posts: 2,209
Next few set ups I'm roughing out op rod slot and slot entry hole ,locating zero with edge finder. I use dial and digital indicators for precise locations followed by measuring rough cut to confirm .At this stage the slot is roughed out ,I will take several measurments to confirm then finish later.








Thanks from Phil McGrath, CNelson and unkola
IRON WORKER is offline  
Remove Ads
Old November 26th, 2016, 04:12 PM   #77
Lifer
 
IRON WORKER's Avatar
 
Join Date: Mar 2005
Location: USA
Posts: 2,209
Next I will be roughing out right lug cutout and 22 degree shelf as the metal is solid and may move some once relieved . I'll leave plenty to finish later.





Thanks from Phil McGrath, CNelson and unkola
IRON WORKER is offline  
Old November 26th, 2016, 04:18 PM   #78
Lifer
 
IRON WORKER's Avatar
 
Join Date: Mar 2005
Location: USA
Posts: 2,209
I also ned to rough out the 2 degree 20 minute bolt slot so I can get rid of extra meat inside heel front as that area is still chunky .Set on a jig I made thats 10 degree and is set up on the tangent of 2 degree 20 minute over a 2'' distance .







IRON WORKER is offline  
 
Old November 26th, 2016, 06:29 PM   #79
Lifer
 
IRON WORKER's Avatar
 
Join Date: Mar 2005
Location: USA
Posts: 2,209
Short video of slot being machined

http://vid9.photobucket.com/albums/a...psj907w0aw.mp4

IRON WORKER is offline  
Old November 26th, 2016, 09:05 PM   #80
Platoon Commander
 
Sniper_M-14's Avatar
 
Join Date: May 2004
Location: New York
Posts: 492
Still the onlything I can Say is WAY COOL!!!!!

Thanks from IRON WORKER
Sniper_M-14 is online now  
Old November 27th, 2016, 08:51 AM   #81
Automatic Rifleman
 
Henry45's Avatar
 
Join Date: Nov 2015
Location: Arkansas
Posts: 157
That is awesome Iron Worker! Kudos for an absolutely killer job!!

Thanks from IRON WORKER
Henry45 is offline  
Old November 27th, 2016, 05:57 PM   #82
Lifer
 
IRON WORKER's Avatar
 
Join Date: Mar 2005
Location: USA
Posts: 2,209
Next photos will be roughing out right bolt rail .

Video milling right rail
http://vid9.photobucket.com/albums/a...psjw68gwgo.mp4





Thanks from Phil McGrath and CNelson
IRON WORKER is offline  
Old November 27th, 2016, 06:06 PM   #83
Lifer
 
IRON WORKER's Avatar
 
Join Date: Mar 2005
Location: USA
Posts: 2,209
Next is roughing out left bolt raceway , I'm mainly removing excess metal so the bridge webbing will be cleared so I can finish bores .You can see the small area of webbing left behind bridge .







Thanks from Phil McGrath and CNelson
IRON WORKER is offline  
Old November 27th, 2016, 07:56 PM   #84
Old Salt
 
WaM14gunner's Avatar
 
Join Date: Nov 2016
Location: Washington
Posts: 1,349
Amazing how much work is involved in producing one of these!

WaM14gunner is offline  
Old November 27th, 2016, 08:21 PM   #85
Lifer
 
Join Date: Oct 2010
Location: Nj
Posts: 2,232
He is demonstrating very nicely why it is that we value LRB and Bula/JRA receivers. These receivers are a work of art. A cast receiver isn't nearly as sexy!

Thanks from IRON WORKER
7 for 1 is offline  
Old December 20th, 2016, 03:24 PM   #86
Lifer
 
IRON WORKER's Avatar
 
Join Date: Mar 2005
Location: USA
Posts: 2,209
Next photo show my set up in four jaw using aluminum to protect receiver.
I have the receiver indicated on three axis's and to my proof bore I prevously bored.

Start with machining rear bolt passage .730''



IRON WORKER is offline  
Old December 20th, 2016, 03:26 PM   #87
Lifer
 
IRON WORKER's Avatar
 
Join Date: Mar 2005
Location: USA
Posts: 2,209
Next is boring the thread minor bore /bolt passage.






Last edited by IRON WORKER; December 20th, 2016 at 03:43 PM.
IRON WORKER is offline  
Old December 20th, 2016, 03:32 PM   #88
Lifer
 
IRON WORKER's Avatar
 
Join Date: Mar 2005
Location: USA
Posts: 2,209
Next is layout of the timing mark for the barrel threads located 30 degrees below center right side.This is where tool will enter bore to time threads,
I usually engage thread half nut lever and turn chuck by hand while moving coumpound rest until tool touches at timing mark .Then I leave engaged until threads are complete.





Thanks from Phil McGrath and unkola
IRON WORKER is offline  
Old December 20th, 2016, 03:36 PM   #89
Lifer
 
IRON WORKER's Avatar
 
Join Date: Mar 2005
Location: USA
Posts: 2,209
Next is threading barrel threads .first pass on mark.






Finished ,deburred and counterbore lead finished , and barrel indexed .



IRON WORKER is offline  
Old December 20th, 2016, 03:52 PM   #90
Lifer
 
GardenValley's Avatar
 
Join Date: Jun 2011
Location: Texas
Posts: 2,889

Awards Showcase

Thanks for posting all of these photos. I'm following each step of the process and it is all very interesting.

Thanks from IRON WORKER
GardenValley is offline  
Reply

  M14 Forum > M14 M1A Forum > Gunsmithing

Moderator Tools
Display Modes


Similar M14 Forum Discussions
Thread Thread Starter Forum Replies Last Post
Is My Barrel/Trigger assembly USGI? Scroggz308 The M14 33 March 20th, 2016 04:22 PM
Is this a Devine M14 re: 1971 A.R Sales Co. Mark IV? cnpiso Devine M1A 6 November 21st, 2012 09:37 PM
Barreling receivers. Gus Fisher Gus Fisher 18 December 27th, 2010 12:53 PM
Conversations on receivers at Camp Perry. Gus Fisher The M14 4 August 25th, 2010 06:37 AM
Entreprise Arms Receivers FormerDWCollector The M14 12 February 19th, 2009 09:03 PM



Top Gun Sites Top Sites List