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Old 11-30-2015, 02:04 PM   #11
werowance
 
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Originally Posted by Cogsy View Post
Just a thought - is it possible to cut the outside thread while it is still solid, then drill and tap the internal thread after? If you can do it in that order you have a better chance of the part staying in one piece.
yes I should be able to, just the plans say to do it opposite, but it also says to start your threads on the lathe then finish with a die. I just cant thread with my lathe right now due to a chipped gear.

but ill give that a try. tried stainless with tap inside first, then die outside second this weekend and failed. but hopefully reverse will work. I have plenty of that ss rod and its a very small part so I can keep on trying.

thanks for the suggestion.


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Old 11-30-2015, 02:06 PM   #12
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Originally Posted by tornitore45 View Post
Am I missing something?

#10 major diameter = 0.190 regardless of TPI
3/16 major diameter = 0.188

How can you have a pipe threaded inside and outside with those two dimensions?

The result is nothing but disconnected metal dust particles
forgive me, instead of #10 its #6 I didn't have the plans in front of me when I posted

here is the link to the popular science article
https://books.google.com/books?id=Zy...ighter&f=false


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Old 11-30-2015, 04:04 PM   #13
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Originally Posted by Tin Falcon View Post
Hastelloy and inconel are similar High nickel alloys
Tin
Other than high nickel content, not really. Hastelloy is largely nickel and molybdenum, inconel is largely nickel and chromium, and monel is largely nickel and copper. There are various flavors of each with different main and minor alloy contents.
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Old 11-30-2015, 11:55 PM   #14
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here is the link to the popular science article
https://books.google.com/books?id=Zy...ighter&f=false
Thanks for the link, it looks like an interesting project. I finally gave up smoking 2 years ago after 20 years of trying, but making a lighter sounds like a cool thing to do. I'd be interested in seeing more of your build.
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Old 04-21-2016, 11:08 AM   #15
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Monel metal is a copper and nickel alloy containing 65-70 percent nickel, 20-29 percent of copper and small amounts of iron, manganese, silicon and
carbon. It was discovered by Robert Crooks Stanley, who
worked for the International Nickel Company (INCO) in 1905. It is stronger than steel, malleable, resistant to corrosion, has low coefficient of thermal expansion, highly resistant to alkalis. It can be easily brazed, welded and soldered. It is used in sheet and plate ductwork, flashing, gutters and downspouts, mail chutes, laundry chutes, elevator fittings, lighting fixtures, and skylights.


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