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  1. Back when I started machining in the 60's as a...

    Back when I started machining in the 60's as a kid in my fathers shop, all I had for reference materiel was dad's old toolmaker apprentice books from the 50's and a old collection of the Popular...
  2. It looks like a sewing machine bobbin winder.They...

    It looks like a sewing machine bobbin winder.They were mounted on the back of the table on the right side and ran off a small belt from the machine.
  3. Always modify the cheaper replaceable parts.

    Always modify the cheaper replaceable parts.
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    What type of insert are you using? Positive rake?

    What type of insert are you using? Positive rake?
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    Use HSS, but you can also get HSS inserts from...

    Use HSS, but you can also get HSS inserts from A.R.Warner if you don't want to grind.
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    Looks like the Bridgeport M head mill that I had....

    Looks like the Bridgeport M head mill that I had. It.may have had the head changed
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    Instead of taking the spindle out, machine it in...

    Instead of taking the spindle out, machine it in place, using the lathe. It will be concentric to everything that way.
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    We use JGS almost exclusively now. Had too many...

    We use JGS almost exclusively now. Had too many issues with PTG deliveries and office.
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    What size bore? I have gotten them from PTG.

    What size bore? I have gotten them from PTG.
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    I just installed the Babin servo threading...

    I just installed the Babin servo threading attachment on our HLV-BK. It was much easier than finding or making all the necessary parts for metric threads, plus I now have a wider range of imperial...
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    I have seen some setups that use an airline quick...

    I have seen some setups that use an airline quick connect as a swivel fitting.
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    The benchrest shooters build switch barrel rifles...

    The benchrest shooters build switch barrel rifles all the time. They have none of these problems.
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    The other major barrel steel is 4140. Just use...

    The other major barrel steel is 4140. Just use one of the two materials that every barrel manufactures use.
  14. By the way, those numbers work for most Small...

    By the way, those numbers work for most Small rifle primers. When you change to Large rifle primers , like .308, .30-06, etc, the protrusion is .060" to .068" and an indent of .020" to .025". In...
  15. Firing Pin Protrusion on a .223 Rem (5.56mm NATO)...

    Firing Pin Protrusion on a .223 Rem (5.56mm NATO) is supposed to be .030" to .039". Firing Pin indent in a SAMMI copper is supposed to be .020" to .025". This is the standard for DOD and NATO ammo...
  16. I use Rigid Dark Sulfur cutting oil mixed with...

    I use Rigid Dark Sulfur cutting oil mixed with 10% Tap Magic, brushed on for most steel. WD-40 for aluminum, and bacon grease for really tough cutting steel. Small US Gov R&D shop we have tried...
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    I think that Kunhausen has a book on it. I would...

    I think that Kunhausen has a book on it. I would make up some dummy rounds and coat them with a marker as you work on the feed rails. This will show where they hang up.
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    The TM Technologies website above has a very...

    The TM Technologies website above has a very helpful tech section on various methods. Aircraft Aluminum welding I believe is still required to be gas.
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    Yes it can be made. Many have been done in the...

    Yes it can be made. Many have been done in the past. The .458 was designed to fit in a 30-06 length action. Parker Hale made many factory guns in that caliber and action. I have one that was done in...
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    The weights are all that is legal for use when...

    The weights are all that is legal for use when checking triggers at a match.
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    Besides a belt routing drawing, write down all...

    Besides a belt routing drawing, write down all the belt numbers and locations. I order them online and keep a set on hand. A lot cheaper than trying to get a belt on a Saturday afternoon when your...
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    All the matches that I have been to use the...

    All the matches that I have been to use the weights with a hook. Brownell's sells a set with either a rifle hook or a pistol one. I usually set the trigger a hair heavyer than minimum just to ensure...
  23. I use the same setup. Well lubed, no marks.

    I use the same setup. Well lubed, no marks.
  24. I remember being told by a movie weapons prop...

    I remember being told by a movie weapons prop master, that the Star pistils were used because they could be made to fire blanks easier than a 1911.
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    I use an action truing fixture for barrels that...

    I use an action truing fixture for barrels that are too short to fit the spindle
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