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  1. Before punches were cut on wire edm die makers...

    Before punches were cut on wire edm die makers used ball end mills to mill the heel of a punch by milling the punch from a bigger block.
    Makes for a strong punch and gives you a flat surface for...
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    Some info for you: U.S. vs. European...

    Some info for you: U.S. vs. European Manufacturing Drawings | Vista Industrial Products, Inc.
    In today's world most drawings will have the small cone showing what projection you have. In Europe 1st...
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    Standard M4 has 0.7 mm pitch.There is also M4.5...

    Standard M4 has 0.7 mm pitch.There is also M4.5 with a 0.75mm pitch.
    There is NO M4 x 0.075!

    Check if you don't have mislabeled 8-32 or 8-36.

    There is also a Metric Fine M4x.2,M4x.25, M4x.35...
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    If you are making a lot of these parts you could...

    If you are making a lot of these parts you could invest in a rotary lapping table where you lay the parts concave side down and lap one side just using the weight of the part. Than grind the second...
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    I have done a lot of grinding as a tool and die...

    I have done a lot of grinding as a tool and die maker with over 40 years experience.
    1. Find out if you can buy precision ground flat stock close to the size you need.
    2. If you have to grind use...
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    Is this a body holding inserts or will it be...

    Is this a body holding inserts or will it be cutting? If the tool will be cutting, than M-2 (63-65RC)is a good choice. (Limited use with low cutting speed you could use O-1).
    If it serves as a...
  7. Once upon a time:Shorpy Historical Picture...

    Once upon a time:Shorpy Historical Picture Archive :: National Cash Register: 1904 high-resolution photo
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    Do you need to buy a screw? M8 and M10 are common...

    Do you need to buy a screw? M8 and M10 are common sizes. M10x1.25 could be hard to find.
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    Here you will find a lot of useful info on...

    Here you will find a lot of useful info on dividing heads:American Machinists' Handbook and Dictionary of Shop Terms: A Reference Book ... - Fred Herbert Colvin, Frank Arthur Stanley - Google Books
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    Before setting up gears make sure you have...

    Before setting up gears make sure you have disengaged the main spindle from the worm drive. The main spindle must turn freely. Behind the hole plate, on the bottom there is a locking pin which...
  11. The correct ISO description for a STANDARD M7...

    The correct ISO description for a STANDARD M7 screw 10mm long is: M7x10 (or x16, x20, x30 etc)
    The correct ISO description for a FINE M7 screw 10mm long is: M7x0.75x10
    M7 is not a common size but...
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    [QUOTE=gbent;3465606]I could care less what...

    [QUOTE=gbent;3465606]I could care less what measurement system is used. Furlongs and stone would work fine. But give me a hardware system, that is what matters. Metric, which one? Europe has ISO,...
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    If I ever read a made up story the first part of...

    If I ever read a made up story the first part of this post qualifies. Only a person with no metric know how could come up with this. The rest is just as bad. Next time you visit your doctor ask for...
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    I agree with some of the last posts, but .........

    I agree with some of the last posts, but ......
    What really killed the American Machine tool industry was our "great" Pres. Reagan when he killed Americas conversion to Metric. I attended many...
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    I agree. The vote was to leave or to stay. It was...

    I agree. The vote was to leave or to stay. It was not to leave with a package, or to leave on Saturday or Monday after 12pm, or to leave on a rainy Thursday. This sounds like an American shyster...
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    1. Ever punched a time clock? 6.5 hrs = 6:30. 6.6...

    1. Ever punched a time clock? 6.5 hrs = 6:30. 6.6 hrs = 6.48 or turn it around 6:30 = 6.5, 6.48 = 6.6 on the time card stamp.
    By converting the minute to decimal made it a lot easier to calculate...
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    They (the UK) could have left the EU on the first...

    They (the UK) could have left the EU on the first exit day set after article 50. Then they discovered nobody wanted to take the blame if things went really wrong for the UK after leaving and now it...
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    Now that we have used up all the f... words, can...

    Now that we have used up all the f... words, can we go back to Brexit. Yes, the UK knows what they are doing! the EU has already signaled an OK for another extension. So what is the big hurry? More...
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    The next time you fly.......

    Next time on an airplane with nothing to keep you busy think about this. But do not panic!
    Aviation’s Crazy, Mixed Up Units of Measure – AeroSavvy
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    Frank - are you sure you understand FINE...

    Frank - are you sure you understand FINE BLANKING? FINE BLANKING is done on metal. Fine blanking dies use a "STINGER" around the part to be blanked. I am not aware of any FINE BLANKING on plastic....
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    Are you sure about your numbers? Ra-Rz...

    Are you sure about your numbers?
    Ra-Rz Conversion DIN 47
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    Left handed Whitworth (55 deg.) OD 14mm. Pitch 10...

    Left handed Whitworth (55 deg.) OD 14mm. Pitch 10 threads/inch.
    Gg stands for "Gang" meaning thread.
    It is most likely a German - Swiss -Austrian made lathe for export to the US. They would use 10...
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    Those are most likely a die makers taper reamers....

    Those are most likely a die makers taper reamers. They are used to cut a die taper on the bottom of a perforating die so the slug can fall out and not jam the hole in a die block. If the were taper...
  24. I agree with thermite. Do not take it apart....

    I agree with thermite. Do not take it apart. Since it seems your chuck is for manual operation just turn the key to open and pull out the jaws. Turn the key till you see the wedge. Clean it and...
  25. Is there a NAME on the chuck? Like "FORKHARDT" or...

    Is there a NAME on the chuck? Like "FORKHARDT" or "ROHM"? They are precision chucks. They have the advantage of being able to be adjusted without cranking the key a lot. Look for a place on the face...
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