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Offline greg916

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help me fix a mistake
« on: January 03, 2009, 01:13:04 PM »
I used JB weld to apply a front sight to my .357.  Need to install a higher sight. How do I remove it?
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Offline cwlongshot

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Re: help me fix a mistake
« Reply #1 on: January 03, 2009, 01:17:45 PM »
I suggest shock.
 Put the barrel in a vice and wack the site with a drift and hammer, at the junction of the site and barrel. It should :pop: right off...

CW
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Offline greg916

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Re: help me fix a mistake
« Reply #2 on: January 03, 2009, 01:20:36 PM »
Thanks CW. I'll give it a try. JB weld says to heat to 600 degrees, or file and grind. I do not want to mess up the barrel.
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Offline cwlongshot

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Re: help me fix a mistake
« Reply #3 on: January 03, 2009, 01:38:54 PM »
If you need to heat it, 600 shouldn't mess it up to bad. You will likely see where it was but the bluing should survive. Just don't go too hot!!

CW
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Offline burntmuch

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Re: help me fix a mistake
« Reply #4 on: January 03, 2009, 01:47:16 PM »
I would bet a slight wack with a hammer would do it.
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Offline greg916

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Re: help me fix a mistake
« Reply #5 on: January 03, 2009, 01:55:04 PM »
Well, the aluminum sight base broke. The JB weld is still on the barrel. Guess I'll try the propane torch.
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Offline cwlongshot

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Re: help me fix a mistake
« Reply #6 on: January 03, 2009, 01:57:37 PM »
Quote from: greg916 on January 03, 2009, 01:55:04 PM
Well, the aluminum sight base broke. The JB weld is still on the barrel. Guess I'll try the propane torch.

OUCH.. OK on to plan "B".. . . . . . . . . . . . . ;D

CW
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Offline torpedoman

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Re: help me fix a mistake
« Reply #7 on: January 03, 2009, 03:24:01 PM »
acetone or napa will soften j.b.
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Offline NAM70

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Re: help me fix a mistake
« Reply #8 on: January 03, 2009, 03:27:10 PM »
JB Weld can be some tuff stuff. I'm never ceased to be amazed by it. In 1976 I patched a set if 1965 Harley Davidson Sporster cases- that I thought were toast-right behind the rear cylnder. That motorcycle is still on the road today :) Good luck with your project.
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Offline Foggy

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Re: help me fix a mistake
« Reply #9 on: January 03, 2009, 03:57:08 PM »
The next front sight base  should say williams and have driftable sight blades
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Offline Spanky

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Re: help me fix a mistake
« Reply #10 on: January 03, 2009, 04:02:49 PM »
Heat it for a few seconds over the flame on your cook stove.
I've done this a couple of times to remove sights and it works well.
Just grab hold of the sight with pliers and it will come off.


Spanky


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Offline Cat Whisperer

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Re: help me fix a mistake
« Reply #11 on: January 03, 2009, 04:25:41 PM »
Quote from: greg916 on January 03, 2009, 01:55:04 PM
Well, the aluminum sight base broke. The JB weld is still on the barrel. Guess I'll try the propane torch.

STRONGLY suggest a 100 - 250 watt soldering iron - enough capacity to provide the heat and will applly it locally.  We do this all the time to remove parts bonded with a variety of adhesives (bearings, shafts and so forth) in manufacturing.

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Offline mrbgt

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Re: help me fix a mistake
« Reply #12 on: January 04, 2009, 06:07:59 AM »
i would have suggested building up the front sight with jb weld and smoothing with a file , i've done this with some of my milsurps.
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Offline greg916

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Re: help me fix a mistake
« Reply #13 on: January 04, 2009, 11:12:11 AM »
Cat Whisper, the soldering iron worked great.

Foggy, I agree. I used what I had on hand, was off by about 2 inches!
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