Threaded Adapters

  1. Brad93

    Brad93 M J B Engineering

    Messages:
    10,394
    Location:
    Essex
    It’s not drilling and tapping m6. Its drilling 3.2mm and tapping M4 in M6
     
  2. atomant48

    atomant48 Forum Supporter

    Messages:
    989
    Location:
    Salisbury, UK
    1. Nice piece of work there DM.
    2. I need a lathe
    3. What was the application for the OP? An RC car or something ?
     
  3. mtt.tr

    mtt.tr Member

    Messages:
    4,041
    Essex England
    im assuming grim d means hold a bar in the lathe drill it and tap to m6 that way its concentric irrespective of lathe condition, then wind in the m6 in the cut thread then lock of with a nut drill for the m4 jobs a goodun
     
    Last edited: Oct 11, 2020
    Brad93 likes this.
  4. grim_d

    grim_d Unlikeable idiot.

    Messages:
    3,096
    Location:
    Scotland - Ayrshire
    Once you have the M6 mounted though it's no sweat to drill and tap an M4, especially in a lathe.

    I used to frequently drill through 3/16 screws with a 1/8 drill, by hand, with no allowance for breaking through the sides, that's only a gnats whisker over 0.3mm (12 thou) a side on the core diameter.

    Drilling solid rivets is worse, only a thou or two per side before you break through.

    I think you underestimate your ability on your lathe!

    Indeed.
     
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