cutting extractor slot in .22 rimfire barrel help

aklavik

aklavik

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please comment only if you own a mill and lathe ( no armchair Sunray type answers please) I have a old Lakefield type single shot no magazine rifle mark 1 ( it has rare and sentimental value I bought it in 1981 with baby sitting money yea boys desperate to buy guns in the 80s did baby sitting)
I need to cut a extractor slot in the barrel , my thoughts are chamber barrel turn a insert that will just slip fit in chamber ,turn a extractor slot width round portion say 1/4 inch long , then center a slitting saw on this and cut the extractor slot using a dial indicator on my mill table both X and Y , I have the original barrel it was butchered some years ago buy a young man with a ball nose end mill in a attempt to cut flutes into the barrel so can take measurements off of this , am I over thinking this simple operation ? I have several donor barrels some unknown from when the registry brought out the chop saws , and a few cooey,gevarm Winchester barrels ,from same source , thanks
 
It can be done with a Dremel and a cutoff disc about 1/2 inch in diameter. Do it slowly making adjustments as you get close to finish... I have found this easier than the set up and milling.
 
Shoot me a pm I think I have the right barrel for you just sitting here taking up room. I originally snagged it to throw on an old Stevens favorite break action I found bit ended up using a different barrel.
 
Thanks Guntech its such a simple cut I think your right , I may use a lathe tool to scribe the cut nice and square , then the dremel , for that matter a form tool in the lathe used like cutting a key way would do the trick in 5 min as well
 
trevj said:
Needle files work too. You will spend less time doing it than thinking about it.

Cheers
Trev
Click to expand...

And if you don't trust yourself you can add a little insurance by using a sander, grinder or even sharpening stone to make two opposite sides of a small square needle file into safe edges so you only cut on the downside face. And trust me, such files come in very handy later for other things too. So it's not a one shot custom job expense by any means.

In fact the very first thing I do with any new square file is grind off one face to make a safe face. Lots of uses for this. It also allows for producing truly sharp inside corners instead of the usual small rough corner that occurs with the confused cuts of the teeth intersections at the corners of a typical square file.
 
This is slightly off topic, but I find it amazing how many people forget just how much precision work can be done with files and such. Milling machines are real handy and quick, but a good set of files and patience can produce the very same outcome a lot of the time. Throw in judicious use of a Dremel with carbides and cutting wheels and one can achieve 99% of what can be done on a milling machine. Just one more point I have found over the years is that mistakes with files and Dremels are usually much less devastating than with milling machines.
 
Amen to what c-fbmi posted. In this day of CNC toothbrushes it's easy to forget the old world metal working skills. Yet for many things the old ways are easier and faster. This being one such example.
 
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