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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; Are you able to leave the setup intact for extended periods of time? What I mean is, don't you need to knock it down in ...


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Old November 8th, 2016, 07:15 AM   #61
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Are you able to leave the setup intact for extended periods of time? What I mean is, don't you need to knock it down in order to make use of the lathe for other projects, or are you using it exclusively for this project? I'me thinking that once you've bored the barrel thread ID, you'd want to complete all work possible without refixturing.

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Old November 8th, 2016, 08:01 AM   #62
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Best I can hope for is working an hour or two here and there.This will be a long project over the course of months.One must realize the equipment being used is far from the most efficient means .But by going slow I can better check as I go.
Totally understandable! Good luck with your project!

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Old November 8th, 2016, 08:52 AM   #63
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Originally Posted by Jgun View Post
Are you able to leave the setup intact for extended periods of time? What I mean is, don't you need to knock it down in order to make use of the lathe for other projects, or are you using it exclusively for this project? I'me thinking that once you've bored the barrel thread ID, you'd want to complete all work possible without refixturing.
Yep ,that's why I'm using this set up. The barrel thread bore will be finished. Mounted in four jaw chuck,and will be lined up on proof bore I just made.Followed by threading and bridge bolt passage.

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Old November 8th, 2016, 11:00 AM   #64
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Just to cool!

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Old November 8th, 2016, 11:29 AM   #65
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gonna serial number it ncc-1701?

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Old November 13th, 2016, 04:08 PM   #66
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Milling the front of legs with special ground 45 degree corner detail.





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Old November 13th, 2016, 04:13 PM   #67
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Finish cuts on bottom using flycutter




Flycutting the leg bottoms to spec.


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Old November 13th, 2016, 04:15 PM   #68
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Flycutting heeldeck to spec.



45 degree special ground endmill cutting back of leg corner detail



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Old November 13th, 2016, 04:25 PM   #69
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I don't see any indications of coolant in any of your pics, but you seem to be achieving very nice finish. could you tell me what speed/feed you use for the flycutting? Also can you tell me what steel the casting is?

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Old November 13th, 2016, 04:37 PM   #70
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I don't see any indications of coolant in any of your pics, but you seem to be achieving very nice finish. could you tell me what speed/feed you use for the flycutting? Also can you tell me what steel the casting is?
I'm using a thin film of tap free painted on with brush before each pass ,I usually only take about .002 on final pass and feed of about .006 per rev and RPM of 400. I always use tool steel and hone the cutting edge before each final cut.

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Old November 13th, 2016, 04:42 PM   #71
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The steel is 8620 alloy and started as a forged billet

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Old November 13th, 2016, 04:51 PM   #72
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Thanks for the clarification. I was under the impression that the Enterprise receivers (finished) were cast.

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Old November 13th, 2016, 05:11 PM   #73
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You really are one talented person Pat

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Old November 13th, 2016, 05:38 PM   #74
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Thanks for the clarification. I was under the impression that the Enterprise receivers (finished) were cast.
Their M14 receivers were all made from a 12 lb billet ,there old web site used to show the different steps to becoming an M14 receiver .

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Old November 13th, 2016, 07:48 PM   #75
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This receiver is going to be the best receiver Enterprise ever put out, because a talented craftsman finished it!!! WELL DONE!

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