Lathe tread

Sometimes they even differ between models of the same brand.

I just discovered there are a few different sizes.

There are three main lathe threads used currently. Woodturning lathes.

1" x 8 TPI (one inch diameter and 8 threads per inch) 1.25" x 8 TPI (one and a quarter diameter and 8 threads per inch) M33 x 3.5 (metric, 33mm diameter, 3.5 threads per cm) 3/4" x 16 TPI and 1.5" x 6 TPI are also seen somewhat commonly. 1x8 is on current mini lathes and other smaller, medium sized lathes. 1.25 and M33 is on big huge full sized and some medium lathes. Not sure what t he smaller metric, European lathes use? Doubt they use the big M33. And s maller 1x8 is Imperial threading, not metric. In the long ago past, or jus t a couple decades ago, there were many, many different threads used on lat hes. So if you have a 1950s lathe for instance, you will have to measure t he spindle threads and figure out what threading it has. And look for a sp indle adaptor to fit. Chucks for lathes usually have separate spindle adap tors so you can put a new adaptor into the chuck and use it on different la thes. No need to buy a new chuck when you change lathes with different spi ndle threading.

Thank you.

I'm making a disk sander for my lathe and was contemplating purchasing a face plate or a spindle tap to make a face plate. I decided on a spindle tap and make several disks for varying grits. Then I can just change the disk instead of the paper.

Since you asked this question, I assume you are fairly new to turning. The other measurement that is both important and varies is the taper on the in side of the headstock and tailstock. Its that slight taper that holds your drive center in the headstock and the live center in the tailstock.

MOST tapers are a #2 Morris taper, though you will run into some lathes wit h a #1 and some, thankfully very few, that have a #2 on the headstock and a #1 on the tailstock.

I found video explaining that detail.

Thank you