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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; Here are a few of the tools used ,relieved endmill for inside heel with radius. I machined it with carbide to this detail.All other fly ...


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Old July 27th, 2016, 06:05 AM   #46
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Here are a few of the tools used ,relieved endmill for inside heel with radius. I machined it with carbide to this detail.All other fly cutters were hand made from taps.I never through any tool away.


Here is the front bridge,its very close if it cleans up.

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Old November 5th, 2016, 03:58 PM   #47
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Initial qualifying cuts

Had some time this morning to do some more inspecting on this receiver blank . A lot of whats been done by Entreprise was not square or parallel ,luckily there appears to be material just enough to clean up tp print .

The scope mount flat only had about .005'' left ,so first set up was to square it up to heel bottom.The following cuts are done with a small fly cutter .




Next cut is to true up lower left leg ,



Final on this side for now is true up left rear side .


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Old November 5th, 2016, 04:03 PM   #48
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Nest is to true up right leg parallel to opposite side ,I can indicate three axis to confirm as I go.



True up side above rail and outside of rail



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Old November 5th, 2016, 04:14 PM   #49
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Now everthing is pretty much square I have good datum points now to proceed .This will be a work in progress and will take some time to complete as I can.

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Old November 5th, 2016, 04:24 PM   #50
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Thumbs up

Thanks for the update, keep them coming. No rush.

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Old November 5th, 2016, 04:33 PM   #51
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Fascinating to watch it evolve from a block to something we recognize!

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Old November 6th, 2016, 02:39 PM   #52
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Still establishing datum ref. today I faced the receiver ring face to high side perpindicular to sides and bottom so I now have all sides true and also located barrel thread bore and roughed it out to within .020 but it is now central with sides and correct location .

Scope mount hole was already to print so everthing has been referenced from that point . During the course of this I will be repeatibly removing receiver so I can gage as I go . A lot of times I will only rough something just to get a true surface and confirm from several surfaces then go back and finish.









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Old November 6th, 2016, 03:22 PM   #53
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This is an awesome undertaking. Your have a lot of talent I hope your project turns out to be a first class piece of ordinance.

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Old November 6th, 2016, 05:55 PM   #54
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Iron worker, I never tire of seeing the pictures that you post, showing your progress and sharing the setups you use to perform the various operations. Your mastery is truly a pleasure to observe. Wish I had your skill (and tooling). If I can ever locate a modestly priced lathe of my own, I will try my hand at building a bolt action of my own design. It never ceases to amaze me what you guys over on WG are turning out.

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Old November 6th, 2016, 06:25 PM   #55
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I am amazed by this. This is my first term at school, I am taking manufacturing technology, I really love working on the mills and lathes. Welding is a plus too. I so want to be able to do this.

Keep up the awesome work.

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Old November 6th, 2016, 07:15 PM   #56
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Gee what a show ! this is a real treat for me or for us. Thanks Iron

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Old November 7th, 2016, 05:47 PM   #57
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Hi,
Obviously, not for the faint of heart!

Thanks!!!

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Old November 7th, 2016, 09:17 PM   #58
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I will be glad to take a trip just to watch him machine this receiver. Not just to watch, I will be honored to be the master machinist's water boy.

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Old November 8th, 2016, 03:45 AM   #59
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Awesome thread!
How much time do you think you'll have invested in this project?

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Old November 8th, 2016, 07:05 AM   #60
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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.

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