The 4566TSWSSV project

Master Chief, any thoughts about why they mill the serrations on the back of the sight? Wouldn't seem to serve a purpose, unless maybe glare reduction? They do look cool as all get-out, though!


Serrations greatly reduce glare and help present a nice crisp, black sight picture.


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Messin' around with my lathe today...

Took the compound slide off and mounted the milling fixture on the cross slide to set up for a bit of slide machining.

This is a little benchtop machine so I'm using a 3/16" four flute end mill spinning at about 500 rpm. If I had a proper milling machine, I could knock this out in one pass. As it stands however, I just chip away at it with multiple passes until I get to the needed dimensions.

Here we are taking the first cut.
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A couple more passes...
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And we'll check the fit.
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Not quite there yet, need to move the shoulder towards the muzzle another .025" and dust another .010" off the flat part.
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Let's check the fit again. Looks good from here.
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Yup! Now we're talkin'. This'll go right on there now.
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Here's a closeup of the finished relief cut.
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And, while I was set up to mill, I went ahead and dusted a few thousandths off the flat aft of the dovetail just to true it up square.
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unobstructed view from the left side.
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Still have a little cleanup to do in the bottom of the dovetail cut. I'll fix that up with a dovetail file then attend to fitting the sight.

There's not a great deal left to do at this point. A few cosmetic issues that need my attention. Mainly cleaning up the tool marks from the milling. And on the frame, finish cleaning up my tool marks on the dust cover. Still need to Bead blast everything. Then I'll need to go over the slide flats on the surface plate again post blasting. Once that stuff is done we ought to be ready for some assembly.:D

Cheers
Bill
 
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Big Sunday update....

Took care of a bunch of stuff this weekend and the project is moving along nicely.

Broke out the files and got the rear sight seat all cleaned up. Also straightened out the dovetail cut before I set about fitting the sight proper.
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Now onto the actual sight. This one had a great deal of extra meat on the bottom of the dovetail. I didn't take measurements but if I were to guess, I filed about .030" off the base.
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Also had to take a little bit off the dovetail rear.
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And some off the front as well.
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Looks like the fit is going to be really nice and snug. I Don't like seeing daylight under or around the dovetail so I spent a lot of time checking & filing until I was satisfied with the fitment.
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Elsewhere on the slide... Clamped it up in the milling fixture again for some cosmetic cleanup around the ejection port with a 5/64" end mill. This area was pretty lumpy and lacked the nice radius cut at the front left. I wanted to fix all that.
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Went back to the bench for some hand filing then back to the mill to extend the cut little closer to the breechface. Here is the finished cut.
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And back to the bench for some more hand filing on the exterior topside to even the beveling around the ejection port along with erasing a couple dings. Almost ready for the blast cabinet, just one more thing to do on the slide.
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So while I had the machine set up for milling, the thought struck me... *loaded chamber indicator* Got the dimensions off my 4566TSW that has one from the factory. Worked out how to securely clamp & center up the barrel in my milling fixture then loaded a 1/8" end mill in the collet.
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Lets make some more swarf shall we? Here we go.
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Got the cut to where I wanted then did the countersink with a number 2 center drill. All done here.
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So the last thing to do on the slide now is filing the angled groove in the breechface directly over the loaded chamber in the barrel hood. I'll probably take care of this tomorrow.
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And lastly I finished up making the dust cover pretty.
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Just might be ready to put this baby together this week, we'll see. One thing I need to do is get some better media in my blast cabinet. The stuff I have in there now has become almost like baby powder. All it really does now is make a shiny surface dull. I need something with some tooth. Perhaps 80 or 120 mesh aluminum oxide will do. Gonna have to check around town tomorrow and see what I can get.

I hope everyone had a nice Easter.
That's all for now.

Cheers
Bill
 
Bill, I hope you realize that looking at that dust cover rivet & hole free sure makes it hard for me to live with my railed TSW's! The pistol is looking good;can't wait to see the final result.
 
Sir,

I am so impressed with your work. Bless you for keeping us informed. A 3/16 end mill at 500 RPM with hopes of a single pass - be serious, most folks have little idea what that means, sir. It harkens me to my days of running a Cinncinnati #4 milling machine, a Wilton vice, and the acrid smell of Cool Tool and the whistle of an air line in my right ear and chips burning on my skin. Could be why my hearing is a bit off on that side. You have done well. Go forth and be proud. Thank you.
 
Well Gents, She's all together now. Had one minor malfunction once Everything was together though. In DA the hammer dropped way too early and I mean WAY too early. So I pulled the frame back apart and re-examined everything under the loupe. Well, I found the problem was the hammer itself. Seems someone had taken a file or something and did a number on the DA hooks such that the drawbar could barely hang on. I will need to be a bit more attentive inspecting these parts when I receive them. Fortunately I had another flash-chromed forged spurless hammer handy while not quite as pretty cosmetically it's perfect mechanically so a quick swap of the stirrup and I was back in business.

Here are some shots of the assembled piece:

Right side.
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And the left.
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Topside perspective.
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Decocker detail left.
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And right.
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Trigger guard de-horning.
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Bobbed beavertail.
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Backsight inletting detail.
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Backsight a little closer from another angle.
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Loaded chamber indicator & ejection port detail.
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Like I said, "Don't like seein' daylight under the dovetails"
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I like the sight picture.
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There's still a couple things needing attention. I feel a little grittiness in the DA pull that I'll have to attend to and once I'm set up with some cutting abrasive in a cabinet I'll strip and touch up the frame again the blend the finish.

Were calling this provisionally done pending test drive this Saturday. Range report to follow this coming weekend.

Cheers
Bill
 
I'm surprised that you didn't polish the barrel hood. That's something I always do to my 3rd gen Smiths. The rough hood makes it look unfinished.
 
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