Thread relief on tenon

[JerrySharrett]

As to spring passes,a spring pass is where you make a pass across the threaded item without feeding the compound. The first spring pass shouldn't cut any or just slightly. If your first spring pass removes any material other then just a very slight amount you have been feeding in too much per pass prior to that.

Make 3-4 spring passes to finish anyway. On small lathes and on an unsupported stub like a barrel tenon you will get a better finish to let the threading tool "burnish" the thread anyway.

 

[jackie schmidt]

I guess every pass I make is a Spring Pass, since I thread straight in with the cross slide.

As for the tools, I do not use lay down tools...........jackie

http://www.basstool.com/PDF/CATALOG/591-656.pdf

scroll down to the MTVO-C Holder. That is what I use.

 

[WSnyder]

As for the tools, I do not use lay down tools...........jackie

http://www.basstool.com/PDF/CATALOG/591-656.pdf

scroll down to the MTVO-C Holder. That is what I use.

I thought that's what I saw in your pictures (TNMC inserts). I have a similar toolholder in my hand right now from a different manufacturer without the top clamp and it uses TNMC/TPMC inserts as well so I'm familiar with it's capabilities.

 

[JerrySharrett]

I guess every pass I make is a Spring Pass, since I thread straight in with the cross slide.

Ase.

Whatever!!!