The Accurate Reloading Forums
Integral Barrel - Manual Machines

This topic can be found at:
https://forums.accuratereloading.com/eve/forums/a/tpc/f/7971019521/m/8621019352

05 September 2019, 03:19
MNR
Integral Barrel - Manual Machines
I hope I'm not overdoing it with the amount of videos posted on here Smiler
https://youtu.be/3UaPfRsXnkM
I had to make a barrel for a customer's project last week and decided to make a short video of the process. Express sights, recoil lug, and sling swivel are all integral. The barrel profile and sight locations were to customer's specs. I patterned the sight and sling swivel designs on what I've done in the past.
Machine work was done on a manual lathe and mill. My theory when doing barrels like these is to remove as much material as possible quickly and rigidly before making the precise cuts. This is why on the lathe I step the contour of the barrel in before offsetting the tailstock and running between centers for a final cleanup pass. On the Mill I do as much work as possible with a vise before making light cuts between centers with an indexing head. Not a lot of difficult math on a barrel like this, just time. Integral quarter ribs and full ribs are a bit more work with far less lathe time.


www.mnrcustom.com
https://www.facebook.com/MNR-C...LLC-485145854894639/
05 September 2019, 04:03
Dulltool17
Wonderful work. Not only are you extremely talented, you must be extraordinarily patient!

That mill work between centers looks to be immensely time-consuming. Some guys have multi-axis CNC for these jobs, but I can really appreciate the amount of effort that goes into the set-ups for this on a manual mill!

Thanks for the enjoyable post.


Doug Wilhelmi
NRA Life Member

05 September 2019, 04:06
vapodog
Here s a barrel I mlled to octagon from round with a manual machine.. It's from a stainless steel 1 .25" blank first left round a short distance then a straight octagon section for about 1 1/2" and then a tapered octagon for several inches and to a rear sight island. The barrel terminates in a vent rib secton with the underside again turned to round. This has no welding at all....it's 100% milled from the 1.25" barrel blank. It's only one of two I've done in a lifetime...this one a walking gun in .30-06 and the first a "window" gun in .222










Now if a "peon" like me can do it, then anyone should be able to do it......right?

OH,,,,BTW....the round section under the vent rib is tapered as well.....


///////////////////////////////////////////////////////////////////////////
"Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery."
Winston Churchill
05 September 2019, 07:11
JTEX
Outstanding work. Thank you for sharing.
05 September 2019, 07:28
Lee Baumgart
You're not over doing it. Keep the videos coming!

Lee
05 September 2019, 17:41
MNR
Thank you guys.
Vapodog - That's a very interesting barrel. A lot of hours went into that!


www.mnrcustom.com
https://www.facebook.com/MNR-C...LLC-485145854894639/
05 September 2019, 17:54
farbedo
Please keep sharing. I like seeing the different machine setups and fixturing used for unique and one off operations.

Great work.

Jeremy
05 September 2019, 18:46
RayO
Excellent video and superb craftsmanship.
05 September 2019, 19:04
Woodhits
Thanks for posting that. Is that a Grizzly lathe? If so, yours sure runs smoother than mine!
05 September 2019, 21:19
TREE 'EM
Your video production is just as well crafted as your barrel.

WELL DONE!


All We Know Is All We Are
05 September 2019, 22:10
packrattusnongratus
Thanks from a 'Wannabe machinist. Be Well. Packy
05 September 2019, 22:20
nopride2
Impressive.

Dave
06 September 2019, 01:58
MNR
It sure is. It's been a decent lathe. Like most things Chinese there's parts on it I've had to fix or keep adjusting, but it runs true enough.
quote:
Originally posted by Woodhits:
Thanks for posting that. Is that a Grizzly lathe? If so, yours sure runs smoother than mine!



www.mnrcustom.com
https://www.facebook.com/MNR-C...LLC-485145854894639/
06 September 2019, 03:42
Woodhits
Glad to hear it. I struggled with mine for years due to excessive vibration and finally ended up trading the factory motor for a three-phase WEG. Problem solved.
08 September 2019, 08:58
Doug W
...