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Yes I just re-checked and from 1"- 5" everything lines up

I absolutely appreciate the time everyone is taking to walk through this with me. And, just an FYI, I am a "self taught" learn by doing guy (with alot of help from "youTube). I started with a little table top PA mill and 8x11 Chinese lathe about 4-5 years ago. I upgraded to a King PDM-30 mill...

Yes, this is how I had it set. I didn't advance the compound when I cut the threads, I just "plunged" in .010/cut.

@Jswain- yes, and yes it translates to the workpiece @historicalarms - I am not sure how I would check for consistent gear mesh. @Bandit ,@PeterT, @RobinHood - I started with the clamshell engaged, turned the chuck to remove backlash, set up the dial indicator (on the tailstock side of the...

I had the same question as Mcgyver. In my experience, (20 yrs as a finish carpenter) you are better off to go to somewhere like Windsor Plywood for materials. Most of the inexpensive plywood has a very thin veneer that you can't sand easily without completely removing it. A good multi ply...

@Susquatch , the process I went through was to set the levers to the thread pitch, engage the threading lever, rotated the chuck by hand to a set of wirness marks (to take out any backlash) zero the indicator, then rotate the number of threads and measure the travel of the carriage. I also...

Threading update: I measured a selection of threads that are divisible by 8TPI and here are the results of what I measured 8TPI- 1.035" 16TPI- 1.022 " 24TPI- .966" 32TPI- 1.054" 40TPI- .994" 48TPI- .902" 56TPI- 1.024" I'm not sure what can be extrapolated by these measurements, all I know is...

I don't feel quite as bad now. If it is confusing you guys a bit too (you have far more knowledge about this than I do). I know there will be much satisfaction for me once this learning curve (far more steep than I'd like...LOL) is in the rear view mirror.

Thanks for you input. Yes, this is a new lathe, and my first attempt at threading of any kind. I hadn't thought of trying the other thread options with that setup and measuring them. I will try that. The gears are all keyed and have set screws. The lower gear is almost a press fit on the shaft...

Here's a curiosity I just noticed as I opened my manual to look at the gearbox layout. Why are some headstock gears in Parentheses? Are there two options?