Very nice video. I understood very well. Thanks. Some other similar videos show the compound rest 30 degrees to the left instead to the right so the cutting is done via the left side of the cutting tool. Do we get exactly same results with this method? This is more practical because external threads will be cut the same way (i mean 30 degrees compound to the right). Can you advise please?
so you can have it 30 degrees to the left or the right. I'm cutting on the trailing edge of the cutter in this instance. If you rotate it 30 degrees to the left then you'll cut on the leading edge of the cutter. I guess I would say try it both ways and go with whatever way gives you the best results. :)
No you do not get the exact same result. Cutting on the leading edge keep pressure on the lead screw to keep backlash firmly under control. Cutting on the trailing edge allows cutting pressure to INCREASE the lead screw backlash which can give your thread an inconsistent lead, also known as a "drunken thread".
I've done 29.5 and 30 but for internal threads I like to do 30 so I get symmetrical threads. I don't really get chatter at 30 so I figure it's not worth it.
setting it at and angle dramatically reduces chatter since I'm only cutting on the leading edge and not both the leading and trailing edge of the insert. My lathe does not have reverse so I have to dis engage the half nut...
U did a great job sir!
3.58> onwards
Is this a problem out side the machine shop as well , always good to have a safe word
I see here you hav set compund to the right, is that correct? when threadind internan threads?
Thread away from the chuck, no crashes. I’ve never threaded into a hole. Backward and upside down😂
Very nice video. I understood very well. Thanks. Some other similar videos show the compound rest 30 degrees to the left instead to the right so the cutting is done via the left side of the cutting tool. Do we get exactly same results with this method? This is more practical because external threads will be cut the same way (i mean 30 degrees compound to the right). Can you advise please?
so you can have it 30 degrees to the left or the right. I'm cutting on the trailing edge of the cutter in this instance. If you rotate it 30 degrees to the left then you'll cut on the leading edge of the cutter. I guess I would say try it both ways and go with whatever way gives you the best results. :)
@@BeckTools Thanks. Since it works on the right for both external and internal threads, it suits me more. Thanks for the response and the idea 😊
No you do not get the exact same result. Cutting on the leading edge keep pressure on the lead screw to keep backlash firmly under control. Cutting on the trailing edge allows cutting pressure to INCREASE the lead screw backlash which can give your thread an inconsistent lead, also known as a "drunken thread".
I have learned to set compond 30 dgr to the LEFT when cutting internal threads, Am I rigth?
yes 30 dgr works. Some guys do 29 degrees so the chip load is on the leading edge which reduces chatter.
4.28 can you repeat that ?
29.5 degrees
I've done 29.5 and 30 but for internal threads I like to do 30 so I get symmetrical threads. I don't really get chatter at 30 so I figure it's not worth it.
I keep the compound straight, and just add a thou or two to each pass. To complicated your way. I never disengage the lever.
setting it at and angle dramatically reduces chatter since I'm only cutting on the leading edge and not both the leading and trailing edge of the insert. My lathe does not have reverse so I have to dis engage the half nut...
Do a normal thread cutting video!!! Camera work is much better. And so is the light!
Good Idea.