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Location: Dismal Nitch, AZ
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Machinists - Threading SS?
Can I thread a 6.36 mm/.248 inch stainless steel rod?
I have a new high carbon steel Irwin Hanson hexagon 6mm x 1.00 die for this. Or will I ruin the die on stainless steel? Will I need a special die for SS? I've ground a 45 degree chamfer on the rod but haven't started to thread it yet. I don't have a lathe, BTW. Thanks for any info.
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Don . "Fully integrated people, in their transparency, tend to not be subject to mechanisms of defense, disguise, deceit, and fraudulence." - - Don R. 1994, an excerpt from My Ass From a Hole in the Ground - A Comparative View |
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07-11-2015, 09:57 AM
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I think your stock is too big...
https://www.yamawa.com/en/support/technical/pdf/technical-contents-14.pdf It should be ~5.8 mm-6.0 mm
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"A machine you build yourself is a vote for a different way of life. There are things you have to earn with your hands." |
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07-11-2015, 11:34 AM
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Quote:
Will I need a special die for SS...will I ruin the die I intend to use?
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Don . "Fully integrated people, in their transparency, tend to not be subject to mechanisms of defense, disguise, deceit, and fraudulence." - - Don R. 1994, an excerpt from My Ass From a Hole in the Ground - A Comparative View |
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07-11-2015, 11:38 AM
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You should be fine as long as you use plenty of oil. A HSS die would be better but carbon steel will work ok. If you have to do the whole length you might be better off just buying a piece of all thread.
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07-11-2015, 11:40 AM
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No full length...an inch or so.
I'll try it and see...this die new was only $8 so we'll see. Thanks for the input and link.
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Don . "Fully integrated people, in their transparency, tend to not be subject to mechanisms of defense, disguise, deceit, and fraudulence." - - Don R. 1994, an excerpt from My Ass From a Hole in the Ground - A Comparative View |
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07-11-2015, 11:47 AM
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Thanks to both of you gents.
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Don . "Fully integrated people, in their transparency, tend to not be subject to mechanisms of defense, disguise, deceit, and fraudulence." - - Don R. 1994, an excerpt from My Ass From a Hole in the Ground - A Comparative View |
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07-11-2015, 11:47 AM
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BTW gents, any input on a good 'bang for the buck' tap/die sets?
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Don . "Fully integrated people, in their transparency, tend to not be subject to mechanisms of defense, disguise, deceit, and fraudulence." - - Don R. 1994, an excerpt from My Ass From a Hole in the Ground - A Comparative View |
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07-11-2015, 11:51 AM
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What would be the best oil for this? Dark cutting oil or light?
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07-11-2015, 01:55 PM
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SS is a ba$$$stard to machine. I would buy an M6 SS bolt and cut an inch off the end...
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"A machine you build yourself is a vote for a different way of life. There are things you have to earn with your hands." |
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07-11-2015, 02:04 PM
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Very good stuff but for a single cut not worth the time or effort. Old timers got by with lard oil, or the more modern equivalent, Crisco. Get a quality die and use lots of lube and take your time.
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"The primary contribution of government to this world is to elicit, entrench, enable, and finally to codify the most destructive aspects of the human personality." Jeffrey Tucker |
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07-11-2015, 02:08 PM
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I may end up buying threaded M6 rod.
I've got a ton of 1/4" SS rods...3' long...thought I'd use them. . I'm making supports for a DIY windscreen for my Duc. Hypermotard. I must have gone through a dozen different ideas with this project. It's fun but prototyping is time consuming. . ~~~~~~~~~ . I have some sewing machine oil from years ago that l've been using...works well.
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Don . "Fully integrated people, in their transparency, tend to not be subject to mechanisms of defense, disguise, deceit, and fraudulence." - - Don R. 1994, an excerpt from My Ass From a Hole in the Ground - A Comparative View |
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07-11-2015, 02:17 PM
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There are a dozen common types of stainless steel available and another 40 or so rare alloys. Which stainless steel are you talking about?
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07-11-2015, 03:35 PM
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Dunno...I just came across this supply of SS rods.
I've read about 303 & 304. As far as machineability, 303 cuts beautifully. 304 is miserable...that's the extent of my savvy.
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Don . "Fully integrated people, in their transparency, tend to not be subject to mechanisms of defense, disguise, deceit, and fraudulence." - - Don R. 1994, an excerpt from My Ass From a Hole in the Ground - A Comparative View |
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07-11-2015, 03:40 PM
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This is not a do or die deal...I have some steel rods I can salvage.
But I'm coming to the end of my few steel rods due to all of the trial & errors. That's heavy on "errors".  Thought I could delve into my SS rods if needed.
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Don . "Fully integrated people, in their transparency, tend to not be subject to mechanisms of defense, disguise, deceit, and fraudulence." - - Don R. 1994, an excerpt from My Ass From a Hole in the Ground - A Comparative View |
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07-11-2015, 03:44 PM
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I fab-up a set of support rods that fit and will work, then I get a better idea and those rods won't work so hot.
I'm retired and like to putz & fiddle...ya dig?  . SS rods are magnetic, if that means anything.
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Don . "Fully integrated people, in their transparency, tend to not be subject to mechanisms of defense, disguise, deceit, and fraudulence." - - Don R. 1994, an excerpt from My Ass From a Hole in the Ground - A Comparative View Last edited by Don Ro; 07-11-2015 at 03:58 PM.. Reason: Mo info |
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07-11-2015, 03:46 PM
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Just read this on a machinist forum...a hoot!
. ~~~~~ . "Don't laugh until after you have tried this: for threading small diameter (1/2" or less) stainless rod, use plain ole lard. Yep, the cooking stuff. I worked in a textile mill for ten years where there was plenty of SS machining to be done. We bought lard in the five gallon pails to use with threading and machining, put it on with small paint brushes. Another good product for pumping through coolant systems, and to use by hand, is the Ridgid Dark threading oil. The lard is incredible on any metal but like mentioned, on stainless it's hard to beat. Animal fat has a capillary action that loves Iron molecules. - David"
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Don . "Fully integrated people, in their transparency, tend to not be subject to mechanisms of defense, disguise, deceit, and fraudulence." - - Don R. 1994, an excerpt from My Ass From a Hole in the Ground - A Comparative View |
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07-11-2015, 04:56 PM
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I used to work somewhere that hydrocarbon-based lubricants on the metal products was a no-no and so everything was animal-fat based. Didn't smell good in August in that shop.
I use 'Tap Magic' for most threading applications (including stainless) in my garage. It works very well. You should have no issues with HSS taps/dies in stainless if you're careful and lube well. |
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07-11-2015, 05:54 PM
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Slippery Slope Victim
Join Date: Oct 2001
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Mix in a small amount of dark cutting oil into mineral oil, a substitute for NuClear cutting oil for SS. We've done that in a pinch. Agreed, Tap Magic is excellent.
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07-13-2015, 08:54 AM
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No help on your project here but would love to see the results. From a fellow Hyper owner.
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87' Carmine Red Carrera - Keeper 82' Silver SC - Sold 79' Gran Prix White SC - Sold 05' Black C2S - Daily driver I have never really completely understood anything. |
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07-13-2015, 09:31 AM
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Quote:
If I ever finish it...changing my mind about the mounting hardware/struts every 2 hours. It's crazy-makin'... . ...but fun, just the same. . Have the rig in my living room where it's 76 degrees...it's 110' in my garage. My house interior looks like my work shop now. I don't care. 
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Don . "Fully integrated people, in their transparency, tend to not be subject to mechanisms of defense, disguise, deceit, and fraudulence." - - Don R. 1994, an excerpt from My Ass From a Hole in the Ground - A Comparative View Last edited by Don Ro; 07-13-2015 at 07:16 PM.. |
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07-13-2015, 07:14 PM
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