Single Point Threading on a PM-1030V?

darkzero said:
Most lathes will need some sort of gear change, from imperial to metric at the least. That is unless you go CNC or get a big and/or expensive industrial lathe. Prepare to spend a lot of money on a lathe that doesn't require swapping a gear.
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I got spoiled at a young age . I had this lathe at my disposal for 15 years . If I could find one in good working order , I'd buy it in a heartbeat .

LeBlond Makino Count 15 / NEF CT 40 CNC Lathe T30296: Amazon.com: Tools & Home Improvement

LeBlond Makino Count 15 / NEF CT 40 CNC Lathe T30296: Amazon.com: Tools & Home Improvement
www.amazon.com
 
mrpete222 shows a whole lot of this work in his Shop Tips #220, #221, #222, #224 and #225. It doesn’t look like any kind of a problem.
 
I am going to try this today. I will post pictures in this thread. I will be careful so as not to disable the machine.
 
I don't know how you're intending to cut your threads (using the compound or the cross-feed) but if you're going to use the compound I suggest you revisit the angle you have it set to first. As of your last photos, it's set way to shallow and will cut lopsided threads. The angle it needs to follow is what I've lined in green -- 30 degrees off perpendicular to the work. Your photo shows it at 60 degrees from perpendicular.

If you're using the cross-feed method of taking your cut it won't matter -- thread away!

1581874883142.png
 
francist said:
I don't know how you're intending to cut your threads (using the compound or the cross-feed) but if you're going to use the compound I suggest you revisit the angle you have it set to first. As of your last photos, it's set way to shallow and will cut lopsided threads. The angle it needs to follow is what I've lined in green -- 30 degrees off perpendicular to the work. Your photo shows it at 60 degrees from perpendicular.

If you're using the cross-feed method of taking your cut it won't matter -- thread away!

View attachment 313803
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Looks like I got the angle wrong. I’m just starting on this now. I will post a picture of the change that I made.
 
I found this picture on the internet. It looks like he has the angle set correctly. Nice use of a combination square.

30 degree.PNG
 
It's an extremely common error -- where the graduations start is not consistent from one manufacturer to another so lots of guys get confused at the beginning. Once you develop an eye for what looks right, you'll see it immediately when it's not. :encourage:

-f
 
francist said:
It's an extremely common error -- where the graduations start is not consistent from one manufacturer to another so lots of guys get confused at the beginning. Once you develop an eye for what looks right, you'll see it immediately when it's not. :encourage:

-f
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In the photo above where he has the angle set correctly, the value of the compound angle on the scale would be hard to read, as it is mostly covered. I like the use of a combination square.
 
erikmannie said:
In the photo above where he has the angle set correctly, the value of the compound angle on the scale would be hard to read, as it is mostly covered
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I see, that could be part of the problem with people trying to set it then! Why manufacturers do that is beyond me.

I have an older machine and the scale is very visible. but I still rely on counting off the degree marks from perpendicular just to make sure. It's fast and easy, and I know that it's correct for my machine.
 
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