Looking good Mike! Try this, before taking your last couple of final passes, run a long angle lathe file or mill file over the crests and/or scotchbrite to get rid of most of those burs. Then take your final cut & a spring pass if needed. And when you get close to your final passes, take very light DOCs before the final. Your threads should come out beautiful like this!
(This feels weird, I can't believe I'm giving The Doc advise. )
Wow Will, that looks beautiful!To add to this thread... (well not much really)
I always thread using the compound. That's how I was taught & that's what I'm used to. I've tried threading with just the cross slide & it came out fine on aluminum 20 TPI, 304 not so much. I don't like it, just not used to it I guess. I only tried it cause this subject came up a while back on another forum. Never knew it would make a difference for coarser than 20 TPI (good to know) but then again I never did try any coarser than 20 TPI.
I thread harder materials like SS & Ti often. Using the compound gives me better results. As Bob mentioned, another reason I like using the compound cause it's easy to keep track of DOC. When threading with the cross slide I quickly lost track of where I was at. However lots of times I will thread with the compound, then make my final pass with the cross slide.
Threads on Ti 6AL4V (grade 5)
thanks mikey!I dunno', Mike. Looks good to me.
I'm ecstatic that i learned something new and was able to do things differently.
i'm very appreciative of you and all the good folks here on the forum that share knowledge freely.
i can't ever be too knowledgeable to listen to good advice.
thanks for giving it to me straight
The depth of cut is the cosine of the angle times the tool travel. For your 14.5 degree angle, I assume you would set the compound to 7.25 degrees. Then you multiply the distance moved on the compound times .992 to get the achieved depth of cut. (It is really close enough to 1 to be disregarded...)I would say I learned from this thread...but I need compound DOC VS the dial reading of the compound explained. If this isn't on topic enough I can start a new post....and also relate this 14.5 degree setups.
Mike that looks great!