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Post by rick59 on Jun 2, 2012 23:42:11 GMT -5
Here's a couple pictures of my new knurling tool that a friend built for me, I gave him a picture of one I found on the net that someone had made and this is what he brought back to me.   This is the one that I gave him a picture of.  |
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Post by Al on Jun 3, 2012 4:33:35 GMT -5
good ole American ingenuity!!!!
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Post by Deleted on Jun 3, 2012 6:02:30 GMT -5
pretty slick, who is going to volunteer to build a batch?
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Post by Richard on Jun 3, 2012 7:59:43 GMT -5
A very interesting concept! I would assume that the number of turns determines the size the bullet gets knurled to?
Just thinking: If the section where the two posts that holds the spring were reconfigured and slots milled in, then the posts could be slid outward (then tightened) to change spring pressure. In doing so, the amount of turns necessary to "knurl up" to a specific size might be lessened?
Richard
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Post by dannoboone on Jun 3, 2012 11:29:26 GMT -5
That is one nice piece of work! Rick, do you know where he got the knurled steel? Spring? It really wouldn't be that hard to make one with the right tooling. Sure would be easier than the file method of knurling .451 bullets to .458, like I've been doing this weekend.  |
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Post by cowhunter on Jun 3, 2012 11:33:12 GMT -5
Great idea--have you tried any solid copper yet?
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Post by muznut on Jun 3, 2012 15:31:47 GMT -5
Nice, remove the T handle and weld a a hex head nut on it and you could use a rechargeable hand drill with a socket driver to turn it.  |
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Post by rick59 on Jun 3, 2012 17:16:11 GMT -5
That is one nice piece of work! Rick, do you know where he got the knurled steel? Spring? It really wouldn't be that hard to make one with the right tooling. Sure would be easier than the file method of knurling .451 bullets to .458, like I've been doing this weekend. He made everything at the tool & die shop he works at, I'm guessing that he got the spring there also. Great idea--have you tried any solid copper yet? No I haven't but I did try it out on a copper jacketed and it worked great, I just got it in my hands last night about 9PM. Nice, remove the T handle and weld a a hex head nut on it and you could use a rechargeable hand drill with a socket driver to turn it. I''ll pass on the welding idea, it works real easy just as it is. |
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Post by Deleted on Jun 3, 2012 17:38:33 GMT -5
If he could produce 5-10 at a time, how much would he sell them for?
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Post by rossman40 on Jun 3, 2012 21:28:23 GMT -5
You can actually get the knurling rollers already cut in HHS or if that isn't tough enough, cobalt. That way you can change the roller for different bullet sizes. The secret to form knurling is using the right pitch. I would have made just two knurl rollers, one a left diagonal and the other a right diagonal, and the third roller a flat (of course the driver would have to be one of the knurlers). Getting three diamonds to sync on copper might be tough.
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Post by 10ga on Jun 4, 2012 14:24:22 GMT -5
How about a diamond cut for the driver and 2 smooth. Could have several size/type/agressive/longer/shorter drivers and just use the same 2 smooth that don't get changed. Cheaper as fewer knurled driver pieces? AND the spring would only have to drive one set of knurling into the bullet. Just thinkin aloud. $.02 10 ga
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Post by muznut on Jun 4, 2012 14:52:26 GMT -5
I think with all copper bullets you might get tired of cranking that thing by hand.
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Post by rick59 on Jun 4, 2012 15:14:29 GMT -5
Hey it beats paying $150+ for a Cobin knurling tool that also uses 3 knurled rollers and a hand crank, this one cost me $0.
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Post by dannoboone on Jun 4, 2012 16:45:16 GMT -5
I think with all copper bullets you might get tired of cranking that thing by hand. Can't be nearly as bad as rolling the all copper's between two files!! |
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Post by dannoboone on Jun 4, 2012 16:48:26 GMT -5
You can actually get the knurling rollers already cut in HHS or if that isn't tough enough, cobalt. That way you can change the roller for different bullet sizes. OK, I've done a couple searches only to come up with a bunch of junk that wouldn't work. From whom can they be ordered? |
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Post by artjr338wm on Jun 6, 2012 20:03:25 GMT -5
If they will work on knurling 45 caliber all copper Barnes CINSISTANTLY I would be willing to pay $100 for one if it will last for around 500 bullets and replacement parts can be had.
Arthur.
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Post by Deleted on Jun 8, 2012 9:54:44 GMT -5
Your buddy hooked you up,good for you...cool tool......
For more tension just add another spring to the post........just a thought.....
Greenhorn
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Post by speedrackin on Dec 23, 2014 10:05:39 GMT -5
Couple pics of knurler an Amish friend of mine that has a machine shop made for me  |
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Post by deadeye on Dec 23, 2014 10:25:08 GMT -5
very nice~ I like the screw stop for depth control.
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Post by linebaugh on Dec 23, 2014 10:40:53 GMT -5
Love it. Good work to all involved.
As stated HSS, carbide, cobalt rollers would be the cats meow. I assume one could case harden the steel rollers as they are now and get a good life expectancy as well.
Again I love it. Simple and effective. Good job and thanks for posting.
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Post by linebaugh on Dec 23, 2014 10:45:36 GMT -5
A simple thought but using the same set up as above why not just stack a set of knurl tool rollers? I know the pattern may be off from top to bottom but I'm not sure that why that would be an issue.
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Post by dannoboone on Dec 23, 2014 17:21:57 GMT -5
Speedrackin, I would be tickled pink just to be able to find knurling wheels like that. Seems like anything over 3/8" is non-existent to just go out and buy. Your friend did some very nice work, there! A simple thought but using the same set up as above why not just stack a set of knurl tool rollers? I know the pattern may be off from top to bottom but I'm not sure that why that would be an issue. Linebaugh, some of the bullets we use don't really need more than what one roller depth will do. While one doesn't seem to be quite enough for FTX's, it is just about perfect for the Match Hunter and BE bullets. I did make one using commercially available rollers, but it is so ugly, I haven't taken photos of it.  It does work, though. |
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Post by speedrackin on Dec 23, 2014 17:37:07 GMT -5
Never thought to take a pic of some 275 be i did ...thru my last one at paper today ......Ill take donations ..... parkers only
Ill ask him where he got them my hunch is he made them......not sure
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Post by dannoboone on Dec 23, 2014 18:50:09 GMT -5
Ill ask him where he got them my hunch is he made them......not sure Good hunch. Mine, too. Wonder if he would make them to sell?? |
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Post by speedrackin on Dec 23, 2014 18:59:34 GMT -5
Ill ask the whole knurler or just the 2 wheels?
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It does