GunLab

Sunday answer

Thanks to 7_92x57 he has posted an add from the old Parker-Hall company.

A couple of views of it on the rifle.

A side view of it mounted

As seen from the rear of the rifle

Many thanks to John and Dave for this accessory.

Sorry for the delay in putting up this post.

Memorial day

Lest we not forget the reason of this holiday.

This video was made by Randy Wright.

More on the CNC router

The making of the new Z axis.

Starting with the solid models. You can see the entire assembly. Front and

This solid model shows the changes that we have made.

Pins to maintain alignment, lower bearing for the screw support.

The new upper housing

Now on to the actual nuts and bolts.

The entire assembly was taken apart.

The new lower support plate with the lower bearing installed.

Holes for pins as well as the bolts holding it together.

A close up of the positioning pins.

A quick video tour of the cnc router z axis.

Weekend update 5-21-17

I spent most of the weekend in the fab shop trying to clean up some small projects. With the temperature at the century mark there was no fun working in the sun.

I obtain another bead blaster from a friend.

This required me to run a new air system over to it.

I then started on adding new plugs for my work table and metal table.

Then it was time to mount a vise at the work table.

I started changing out the fittings on the hydraulic power pack.

This is to allow me to change the hoses to run either the fluting press or the hot forging press with the same unit. Eventually I hope to have a separate power pack for the forging press.I also welded on hose supports.

I demo out some cabinets this last week so they were mounted. This is to allow extra storage.

Brought the rollers in and did the drawings for the steel support for the band saw.

The last weekend project was to cut the pipe for a welding and brazing rod holder. I will clean them up with the bead blaster and then weld it up.

A quick video.

Sunday answer 5-21-17

The answer is that it is a low light front sight for a Lewis light machine gun.

One of my favorite machine guns. The Lewis machine gun.

The front sight of a Lewis machine gun

It clamps around the front sight

As seen from the rear of the weapon

What is it Saturday

It has been a while since I have posted a what is it Saturday post.

This is an interesting one.

Good guessing

Barrel Fluting for the VG1-5 barrel

Here is a short video about fluting the VG1-5 barrel.

The process of fluting a barrel is dependent on a number of factors. The first is the tool design. So far we have use 4 different types of fluting tools. All of them have had minor dimensional changes.

The second is pressure. We have pressed the flutes at 1300, 1000 and 800 psi. This factor changes as to the type of steel used in the barrels and the sharpness of the tool.

Third is the material and heat treat of the fluting tool. The first 4 tools were made of O-1. The truth is that this not a satisfactory material. With the suggestion of John D., a friend of gun lab, we will be changing the material to D-2 with a correct heat treat.

In upcoming video’s I will go over the changes to the tool design and why. I will also show the chamber castings of the fluted chamber as the cases after firing using different flute designs and depths. There will be a lot more on fluting in the future.

The Passing of Kevin O’Brien

It is with a heavy heart that I pass the news on that Kevin O’Brien has passed. Most of you will know him as Weaponsman.

There is more here.

http://weaponsman.com/?p=40501

I really enjoyed his site and went to it several times a day. He will be missed.

The last book that he reviewed I ordered just after reading the review. It came in today, only to make me once again think of him and miss his site.

Sig PE-57 and AMT repair sections

Pete, a friend of Gun Lab, was at the last Knob Creek show and picked up a PE-57 kit and repair section. He was nice enough to send me some pictures of the repair part and I thought I would add a few pictures of my AMT rifle to give you a comparison.

The first thing I have to say is that I am not beating up on the guy that made this repair section. This receiver is very complex and if made with the correct steel would be very difficult to press. With out having a progress stamping set up I think he did a descent job.

I also did not have the repair section here to measure.