metric threads

  1. B

    Improved Version: TPI, Feeds, X-Feeds: Generalized Lathe TPI Excel file: "TPI_ManyLathesRev1 N430_1600"

    Re: Improved Version: TPI, Feeds, X-Feeds: Generalized Lathe TPI Excel file: "TPI_ManyLathesRev1 N502_1630" Edit: I re-attached the files. I found a small limitation in the way the macros were written and I have fixed it. See the posting below this one explaining this. Hi Folks, I will...
  2. P

    Gear Selection Question

    I'm unclear as to the correct order for the change gears on my lathe based on the thread chart diagram that i have attached. The lathe has a 120/127 tooth transposing idler gear. If i want to cut 1.5mm pitch metric threads would the 35 tooth upper drive gear mesh with the 120 tooth idler and...
  3. S

    Just an FYI On Some Nylon Change Gears for Metric Threading on QCGB Lathes

    I'm sure this is covered in other posts, but so others don't have to go on a search I'll repeat. If I've really screwed something up, please let me know and post corrections! Standard Logan change gear: 16DP, 14.5PA, 7/16" wide, 5/8" hub with 5/32" key slot. The QCGB lathes came with a 24...
  4. JustMe3

    Specifications for metric pipe thread

    I find myself needing to make a plumbing fitting for metric thread. You should see the looks and responses I have received as I searched for this animal. I can order it from various vendors in Europe, but anyone willing to ship internationally wants a substantial price along with shipping. The...
  5. W

    Cutting Metric Threads on a Logan with standard gears and gearbox Version 3

    For those with both a gearbox and the standard gear set this shows the setup for cutting metric threads. Most are within 1 part in 10,000 a few are within 1 part in a 1000. It is an unlocked spreadsheet so you can play with your own values.
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