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Type: Posts; User: rogertoolmaker

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  1. Replies
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    1,621

    I agree with looking at changing the tool design.

    Change the design so the blade can be a solid or screwed to a blade holder. I'm a diemaker, die designer in stamping dies; I'm not a welder. I taught tool and diemakers for several years in another...
  2. Thread: Laps

    by rogertoolmaker
    Replies
    8
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    562

    Make your own brass laps for the larger diameters.

    Drill and ream with a taper pin or die reamer and turn an arbor to match the taper. Cut a slot along the length of the lap. File a few groves around the lap for the lapping compound. Tap the arbor...
  3. That doesn't sound like a good idea. The lapping...

    That doesn't sound like a good idea. The lapping compound would become charges in the cast iron walls.
  4. Replies
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    3,251

    Just weighing in!

    In Addition, If the blade is grabbing reduce the cutting clearance at the front of the blade.

    Roger
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    425

    Designing dies for drawn shells

    It may be helpful to refer to a copy of "Die Design And Die-making Practices" Published by the Industrial Press the same publishers that prints the "Machinery's Handbook".
    Forty percent is a good...
  6. Replies
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    2,664

    Forming Die Tool Steel for wear

    Use D2 high carbon high chrome tool steel heat-treated to 62-64Rc for the P&D. A simple "V" Shape. Make the punch bend radius the same as the form radius of the bolt. Use a one inch thick steel plate...
  7. The worth of a certificate, Worth it or not?

    I started in the craft in Chicago job shops when I was 14 years old. I worked at all levels of the trade for 55 years. It is the work you can do and your skills. If you have faith in yourself you...
  8. Once you have your Dream Shop what are you going...

    Once you have your Dream Shop what are you going to do with the shop? In a normal routine! Are you going to do contract work or are you doing this to keep yourself busy? These are questions that need...
  9. Drilling 1/32 dia. holes in 6061 Al.

    Try Kerosene for a cutting fluid. 6061T6 is used for extrusions and is very mealy. It will stick to the cutting edge and fill the drill flutes. "5052H34 could have been a better choice of material...
  10. C-clamps twist and can cause the work pcs. to...

    C-clamps twist and can cause the work pcs. to twist. Use parallel clamps if your using clamps.
  11. Pick another steel with higher carbon content....

    Pick another steel with higher carbon content. SAE1095, Harden and temper to 48 to 50 Rockwell C.
    Roger
  12. Replies
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    1,377

    Steel selection for bottom rolls

    Your receiving expert advice and seem to be rejecting the advice. SAE1018 is not the material for this job if you would like good tools. You will not be happy with the long term results of the...
  13. Replies
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    11,376

    Thread cutting SAE 1018

    Set your compound at 29 1/2 degrees. Use your thread gage and set set-up your 60 degree ground threading tool-bit for a 60 degree thread in the work piece. Always use oil when cutting threads. Use...
  14. Replies
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    Slow Cooling

    Get a sack of lime and bury your part in the lime to cool. It will be even slower than sand.
    Roger
  15. Replies
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    756

    Surface Grinding the side of a part

    Dress the side of the wheel with a slight relief (.003 or .004); stopping just as you come very close to the outer edge of the wheel. Feed down and not sideways. Use a 38A80I8VBE or 38A100K8VBE; ...
  16. I don't think you have the tools at your disposal...

    I don't think you have the tools at your disposal to press the dimples.

    Have you though of Drill and Tap 6-32 holes, then install round head screws for the dimples. Fill the heads with 60-40 soft...
  17. Delrin Source

    Regal Plastics in Kansas City, Mo.

    Roger
  18. Replies
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    25,663

    Safety Consideration Using Silver Solder

    Some silver solders contain Cadmium. At elevated temperature Cadmium is very toxic. Use care not to breath the fumes.

    Roger
  19. Replies
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    1,209

    I don't think much of your suggestion to do S7...

    I don't think much of your suggestion to do S7 this way. Take a look at 6150 and heat treat.
    Roger
  20. Replies
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    491

    Make lBrass Lap

    If I understand your post!
    Make a lap from brass One inch long. First ream the hole in the lap with a #2 taper pin reamer and turn the outside diameter of the brass lap to work in the bore. Then...
  21. Replies
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    694

    As Erich Suggested I would hope to add. A...

    As Erich Suggested I would hope to add.
    A formula for determining spindle speed.
    Rpm = 4 X Surface Ft per minute / diameter.

    Surface Feet/Minute using HSS Tool Bits.
    Low Carbon Steel 60 - 80...
  22. Replies
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    1,575

    Heat Treat D2 for Knurling Wheels

    D2 62-64Rc

    Roger
  23. Replies
    16
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    1,251

    I have machined the thread with the lathe and...

    I have machined the thread with the lathe and finished up with a die. I'm assured of a good thread this way. If I need a lathe cut thread I'll finish on the lathe.

    Roger
  24. Replies
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    Safety First

    [QUOTE=imane;3693016]Hi everyone i’m actually new in machining ! I have a question if you can help me , I actually have some steel and aluminum blocs and I want to improve their surface to make it...
  25. Replies
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    I am going make an assumption that your stamping...

    I am going make an assumption that your stamping the part in a plain blanking die. A compound die may solve your problem. We really need more information about your stamping process and requirements....
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