Friends, has anyone here re knurled a snarled up m10/pre m10 Ejector rod end? What works good? I have a m10 that some clown used pliers on.
Ejector rod Knurling Kf
- Thread starter meistermash
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Alk8944
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What works best is springing for the $6-8 that a replacement costs. It will have to be fit. Admittedly this will be a bit more difficult of your gun is a pre-1962 or so and has right-handed threads.
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Amen. Having someone renew the knurling would cost much more. Even if you found someone with a really fine checkering file and a lot of time.
Knurling is usually done in a lathe/screw machine. The tool has a reverse image of the knurling. Most commonly available knurling tools are much, much coarser than the factory version.
Knurling is usually done in a lathe/screw machine. The tool has a reverse image of the knurling. Most commonly available knurling tools are much, much coarser than the factory version.
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OP
Yea. I have a lathe and ejector rod is a m10 left hand thread. My knurling tool is way too coarse and much too wide as well.
So where can I find the $6-8 dollar replacement rod?
I may see if I can find a different knurling tool for the lathe. One of the clamp type that doesn't rely on as much side pressure. No way to match the factory knurl but a fine enough one would be better than what it has.
So where can I find the $6-8 dollar replacement rod?
I may see if I can find a different knurling tool for the lathe. One of the clamp type that doesn't rely on as much side pressure. No way to match the factory knurl but a fine enough one would be better than what it has.
Alk8944
US Veteran
OP
Haven't called them.
Nope
Nope
Gonna Email them.
You forgot one. SARCO. But I won't order from them unless I'm feeling like I need abused.
I work on my own stuff so if I can get the original parts to work, that's what I do first.
Nope
Nope
Gonna Email them.
You forgot one. SARCO. But I won't order from them unless I'm feeling like I need abused.
I work on my own stuff so if I can get the original parts to work, that's what I do first.
Alk8944
US Veteran
CALL S&W, not e-mail, they should be back from the summer shut-down. 800-331-0852.
Sorry to the OP that I am seeing this rather late. I showed just what you are referring to in this thread:
http://smith-wessonforum.com/s-w-smithing/326459-extractor-rod-knurling.html
I don't think I said in this WHAT knurls I used but if you are interested, I can look it up. I spent a lot of time measuring the knurling on several rods and searched through several listings to find what was the absolute closest match. I was pleased with the results. A rod in the pictures show not only damaged knurling but double-tracking that I was able to remove just by running the right sized knurls over it.
What made me do this was damaged knurls on a right hand threaded older rod, one that is not so easily replaced.
Dan
http://smith-wessonforum.com/s-w-smithing/326459-extractor-rod-knurling.html
I don't think I said in this WHAT knurls I used but if you are interested, I can look it up. I spent a lot of time measuring the knurling on several rods and searched through several listings to find what was the absolute closest match. I was pleased with the results. A rod in the pictures show not only damaged knurling but double-tracking that I was able to remove just by running the right sized knurls over it.
What made me do this was damaged knurls on a right hand threaded older rod, one that is not so easily replaced.
Dan
Knurls I used were 50 lpi. I chose some based on the listed number of teeth ( JTS Machinery and Supply catalog) on each knurl so I could be assured of as perfect a match as possible. Not sure I needed to be so fussy. My knurling tool/holder would not accommodate the knurls I chose so built a new set of arms to manage them.
Dan
Dan
OP
My friend. You did a good job on that ex rod and thank you for the good info. I suspected that somebody would have thought about re knurling those buggered up rods.
I was able to order both a extractor rod and center pin from S&W but one of the two is back ordered.
I was able to order both a extractor rod and center pin from S&W but one of the two is back ordered.
I performed this operation with that single knurl set on three different extractor rods. I have another that needs just a little help and will eventually get to it. If you have a lathe, I believe you said you did, and a knurling tool, a set of knurls in this lpi would do you well. I made my own knurling tool holder long ago and as I wrote, I made a new set of arms to accept the 50 lpi knurls I chose. Having a lathe opens up everything,even if you have to MILL on it. Have a good go at it.
Dan
Dan
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