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Thread: New punch and nut

  1. #1
    Boolit Master cheese1566's Avatar
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    New punch and nut

    Crafted up a new punch and nut for the Magma Star I just acquired and cleaned up. I always wondered why they used 1/2”-27 threads...

    Click image for larger version. 

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  2. #2
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    Nice job. Did you cut the threads on a lathe?
    After a shooting spree, they always want to take the guns away from the people who didn't do it. - William S. Burroughs.

  3. #3
    Boolit Master cheese1566's Avatar
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    Quote Originally Posted by ReloaderFred View Post
    Nice job. Did you cut the threads on a lathe?
    I did. The punch on the top (or the right) is the new one modeled after my factory one on my other sizer. Single point cut on A1 tool steel. I also used cold rolled hex stock and a 1/2-27 tap to make the nut.

    I once planned on making punches and nuts with set screws for all my boolits, but that hasn’t happened yet.

  4. #4
    Boolit Grand Master

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    Nice looking work! I love the nuts with set screws that I got from Lathesmith. I've often wondered why so many manufactures use off the wall threat sizes?

  5. #5
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    [QUOTE=cheese1566;4640979]I did. The punch on the top (or the right) is the new one modeled after my factory one on my other sizer. Single point cut on A1 tool steel. I also used cold rolled hex stock and a 1/2-27 tap to make the nut. QUOTE]

    I recently purchased a hobby lathe from Grizzly, but I don't have the knowledge yet to try cutting threads. I'm still learning the basics, but hope to get there eventually, as time allows.
    After a shooting spree, they always want to take the guns away from the people who didn't do it. - William S. Burroughs.

  6. #6
    Boolit Bub
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    Nice work. The reason manufacturers use special threads is the consumer has to return and purchase those specialized products from them.
    Unfortunately this is first hand knowledge from a machinist..

  7. #7
    Boolit Master Traffer's Avatar
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    Quote Originally Posted by bessemer20 View Post
    Nice work. The reason manufacturers use special threads is the consumer has to return and purchase those specialized products from them.
    Unfortunately this is first hand knowledge from a machinist..
    Yup, they call it "proprietary" The computer manufacturers have used the same practice. Apple is the biggest user (abuser?) of this practice.

  8. #8
    Boolit Bub
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    I lost the nut for the punch. Looked all over for the nut and finally came up with a jam nut for a flash hider/suppressor. works for me.

  9. #9
    Boolit Grand Master
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    Quote Originally Posted by cheese1566 View Post
    Crafted up a new punch and nut for the Magma Star I just acquired and cleaned up. I always wondered why they used 1/2”-27 threads...

    Click image for larger version. 

Name:	C9DDF76E-98F3-4CD8-BD04-3F8A5507B982.jpg 
Views:	47 
Size:	70.3 KB 
ID:	241147
    Because they can. Not real common and it insures that someone won't try to cobble something up from the local hardware store.

  10. #10
    Boolit Grand Master
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    I have two punches. One for 9mm,38,357 and is two piece via Lathesmith. The two piece brass punch from Lathesmith allows me the very slight adjustment I need to accommodate the different bullets without the need to change punches. I just look in the book I made and adjust my open height to what I have found that works for me with that bullet and I'm adjusted perfectly.

    The other is a one piece from Lathesmith. Two sizers one a Star and the other a Magma. One for the 44mag,45acp, and 45LC. The other does the 38,357, and 9mm. No need to change punches for me. Sizing dies are engineered so that the 45 caliber die does all my 45 bullets and no lube holes to plug. The same with the 38/357/9mm sizing.

    When you take the time to figure things right you can eliminate extra tooling. I would sooner make a slight adjustment in a two piece punch than pull the punch out and change to a different one. The cost of the two piece punch is more than a standard punch but it more than makes up for it in the fact that the two piece punch does ALL my 38's, 357's, and 9mm's and I'm setup in less than 30 seconds with the correct open height adjustment.

  11. #11
    Boolit Bub
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    Greetings,

    Star Machine Works made loaders as a side line. Their primary goods were sprinkler heads for the local citrus farmers.

    A lot of 27 pitch threads in plumbing parts.

    Cheers,

    Dave

  12. #12
    Boolit Grand Master
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    Makes sense....use the tooling you have on hand. They probably had a foundry with the ability to make their own castings. A smart move on their part. One of the owners must have loved shooting and reloading.

  13. #13
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    Quote Originally Posted by 6bg6ga View Post
    I have two punches. One for 9mm,38,357 and is two piece via Lathesmith. The two piece brass punch from Lathesmith allows me the very slight adjustment I need to accommodate the different bullets without the need to change punches. I just look in the book I made and adjust my open height to what I have found that works for me with that bullet and I'm adjusted perfectly.

    The other is a one piece from Lathesmith. Two sizers one a Star and the other a Magma. One for the 44mag,45acp, and 45LC. The other does the 38,357, and 9mm. No need to change punches for me. Sizing dies are engineered so that the 45 caliber die does all my 45 bullets and no lube holes to plug. The same with the 38/357/9mm sizing.

    When you take the time to figure things right you can eliminate extra tooling. I would sooner make a slight adjustment in a two piece punch than pull the punch out and change to a different one. The cost of the two piece punch is more than a standard punch but it more than makes up for it in the fact that the two piece punch does ALL my 38's, 357's, and 9mm's and I'm setup in less than 30 seconds with the correct open height adjustment.
    Per chance to see a picture of the two piece punch. Sounds interesting but I can't conceptualize exactly how it works. Thanks.

    Sent from my XT1650 using Tapatalk
    Ruger RedHawk 357 Mag 44 Mag GP100 Davidson Exclusive 5" Security Six 2 3/4", Speed Six 4"
    Smith Wesson 629 PP and 686 PP, 617

  14. #14
    Boolit Grand Master
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    Attachment 245279Attachment 245280Attachment 245281

    Maybe this will help

    A little dirty and well used.

  15. #15
    Boolit Grand Master
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    Pretty simple and slick. You screw in a piece that is threaded on the outside like a normal punch and it has been drilled and tapped to accept the threaded punch portion. This is the only punch I use in this sizing lubing machine to do all of my 38's,357's and 9mm bullets.

  16. #16
    Boolit Buddy


    RedHawk357Mag's Avatar
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    Thank you for taking the pictures.

    Sent from my XT1650 using Tapatalk
    Ruger RedHawk 357 Mag 44 Mag GP100 Davidson Exclusive 5" Security Six 2 3/4", Speed Six 4"
    Smith Wesson 629 PP and 686 PP, 617

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check