Swingup external threading tool

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bogstandard:
Bernd,

I wasn't really angry, and the reason I locked the post was to prevent any more people jumping to unfounded conclusions, before we had a look at what the tool actually does, rather than assuming what it would do.

I think a few people could have got themselves into an apology situation, including myself, when of course that isn't what posting on here is all about.

With regards to your backlash worry. I actually set my machine gearset up a little loose to give me that condition from the start, not a lot, but enough, and I have to tell you that I found nothing to worry about on that score. But I did retract a little more than I would normally do (about 1" past the end) just to make sure it was in synch again before it took the next cut.

I am going to try cutting down to 1/8" diameter bar, just to see if the weight of the supported tool causes any problems with bending of the said piece of metal. If it can do that small, then I think that will satisfy most needs. Also to be done is left hand threading, but I expect no problems at all with that. I would really like to do a very large thread as well, but I will have to see what spare metal I have that I can afford to waste on these trials.

I am so happy with how it went this afternoon, I've still got a silly grin from ear to ear. Just hope it doesn't get knocked off by the next bit.

Bogs

I had forgotten to thanks Rob and Ralph for the comments, but also to say to Ralph, if this does turn out as planned, it could make threading for people like yourself much easier, as long as you have a lathe that reverses.

ariz:
I'm happy to see that everything went well with the test, because this sort of threading (making a thread) is the only one that I use: fwd, stop, retract, bckwd, stop, etc. without disengaging the gear
so, this very useful tool will be on top of my to-do list
thank you bogs (and everyone who contributed) :nrocks:

Bernd:
Bog's

I'm glad the tool is working out.

I did learn one valueable lesson from this though, and that is shut up untill the test results are in. :)

Bernd

John Stevenson:
What about stopping a tipped tool in the cut without the help of a run off groove ? That part sounds like the recipe for a chipped tool.

John S.

Ned Ludd:
Hi Mr. Standard,
I can't tell you delighted I am that the tool worked well. :clap:
I am always pleased to be proved wrong, as long as the net result is greater overall knowledge.
Glad to have you back.
Ned Ludd

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