[Shop-talk] Removing a dove tail gun sight....

[Steven Trovato]

OK, so first I have to tell you about all I know about firearms is to 
avoid having one pointed in my direction. Can this gun be 
fired?  Thinking about your cooling idea, I would think that firing 
the gun would heat the barrel.  Perhaps some combination of firing 
the gun and applying the dry ice to the sight would generate the 
expansion/contraction combination you desire.  Now of course this may 
not be terribly practical where your vise is located.  My only 
thought here is that firing a gun makes it hot.  Figuring out if this 
information is useful and how to apply it safely I will leave to 
others with more knowledge on the subject.

-Steve Trovato
strovato at optonline.net


At 05:58 PM 11/27/2009, Gerald Brazil wrote:
>  I am trying to remove a dove tail rear iron sight so that I can install a
>mount for a scope. I have made a block of wood to hold the barrel in my vice
>and it holds it quite nicely. I have been using a brass punch and a pretty
>big ball peen hammer to hit the punch. I have tried going both directions
>with no success. I have no idea if loctite was used when the blade sight was
>installed. If there was a way to super cool the sight without cooling the
>barrel it might loosen it up but since the sight is so small if I put dry
>ice on it the barrel would probably cool down too.