In article ,
Jacek Zagaja jzagaja-at-poczta.onet.pl wrote:
Don,
Oh -- I keep Java and JavaScript turned off for security reasons.
Are you sure that was not another URL? I backed up one layer and
found another one called "panorama" (or something like that), but I
could not see the panorama without enabling Java or JavaScript.
I'm sure, there is no another URL. This is just an applet. Nothing
more. So all in all I understand you have seen my panorama.
The original URL showed me only what appeared a brazed insert
threading cutter.
When I removed the last element of that URL, I backed up to a
page which offered several choices, including one labeled as a panorama.
When I selected that, I saw nothing -- but since I have Java and
JavaScript turned off, I would not expect to see anything, if it is
powered by Java or JavaScript.
Is it smaller, or larger? If it is smaller, then making the part as
two pieces and heat-shrinking them together will make it easier for
you to turn the threads, as you can eliminate that shoulder to the
right of the area being threaded -- at least until after the threads
are cut and the other piece is heat-shrunk in place.
It is smaller. If the "easy way" is concerned then no problem but the
case is to make the worst way 
having integrity on axis. Imagine
there's such thing you must do it as I do. The end justifies the means
You need the thread to be truly concentric to the ID of the
hole in the large end. How important are the other features of that
end? The ones which come to mind a
1) The OD of the inner part of the groove.
2) The ID of the groove.
3) The depth of the groove.
4) The OD of the major diameter.
If none of those have to be precisely concentric with the
threads and the central hole, it strikes me that the easier way is the
best choice.
I believe that another followup showed your material as being
similar to 420 stainless steel in the USA.
The teacher says to student "We have in Poland such a carbon steel
which is weldable, but the same steel in US. isn't meant to be
weldable ". This show the technological level differences in general
There are variations of alloys some of which are easy to weld
and some are not. I know that 12L14 (a very easy to machine mild steel
alloy) is supposed to be difficult to weld, because of the lead content.
1214 (without the 'L') is a bit more difficult to machine, but is easy
to weld. You have to make choices based on what you need to do.
I believe that some stainless steel alloys also have additives
which make them hard to weld, but easier to machine.
I don't do welding (yet) so I don't know too much about this,
but I do know that there are alloys which are designed to be easy to
weld, and others (almost the same, but for small changes) which are
difficult to weld, but easier to machine.
Good Luck,
DoN.
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