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. Shiseiji

    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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