1911 80% Tactical Machining Build, Part 6: Barrel Seating

Quickly learn how to barrel seat your 80% 1911 build.

Setup

Should be the same as cutting the slide rails in Part 5.  Load up the 18mm ball end mill.  You’ll be going for .08″ deep of a cut.  Disclaimer!

1911 80% Barrel Seating
1911 80% Barrel Seating

Cutting

It was difficult to see where exactly was the middle, so I Dykem-ed  and used the calipers to cut a middle line on the flat area.

1911 Barrel Seat Dykem
1911 Barrel Seat Dykem
Eyeballing 1911 Barrel Seat Cut
Eyeballing 1911 Barrel Seat Cut

I got a good first hole.

Barrel Seat First Cut
Barrel Seat First Cut

But after unsuccessfully trying to mill using the drill press (it walks A LOT), I decided to just go to touching holes.  This is the not very clean final product.

1911 Barrel Seat with Drill Press
1911 Barrel Seat with Drill Press

After some filing and sandpaper, it looks a lot better.  The barrel sits fine too.  I’ll file some more afterwards.

Almost Finished Barrel Seat
Almost Finished Barrel Seat

Keep the jig on and we’ll finish the frame with the hammer & sear pin holes next.

Next Lesson

Part 1: Intro (Finding the 80%)

Part 2: Tools

Part 3: Parts List

Part 4: Basic Fitting

Part 5: Cutting the Slide Rail

Part 6: Barrel Seating

Part 7: Hammer & Sear Pin Holes

Part 8: Fitting the Slide

Part 9: Assembly & Fitting

Part 10: GunKote Application

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