Broken Tap Woes, Well kinda....

I wish that I could find some of the old trichloroethylene based Tap Magic. I had both varieties, the one for steel and the one for aluminum without the TCE. Both were excellent. The TCE based stuff would smoke if you tried to tap aluminum with it.
 
Now, when alum gets to 20$ / oz you'll have to buy it on the corner from the shady guy:
"Hey want to buy some alum- cheap!?"
 
I learned my lesson. Anytime I pull a drill out of my index if I am going to tap a hole I throw the mike on it. I then check and double check the chart. Some charts give a differant bit size when tapping steel or aluminum. An ounce of provention is worth a pound of cure.
 
Rarely do small format charts publish what percentage of thread is generated by suggested drill sizes, and huge portion of tapping goes on with users not regarding the "GH" [mainly pitch diameter, then root, then crest configuration] of tap used. It also depends on intended audience. I'd bet a HF tap and die plate of carbon steel steels probably hover ~ 66%. Charts for mechanics run about mid-range, aircraft higher yet, high-stress products...well, they monitor every feature of a thread including the surface finish for positive engagement and applicable torque.

Everything you wanted to know about taps but were afraid to ask, styles of taps, class of thread , gh numbers , basic point in thread measurement , constants for finding pitch diameter and minor diameter of screw threads , thread constants for vario

Everything you wanted to know about taps but were afraid to ask
www.newmantools.com www.newmantools.com
I build industrial machinery [day gig] and we never tap lower than 72%, ferrous or not and regardless print call-out for depth, we go 2.5 diameters of full thread or maximum allowable thickness of feature concerned.

When I post, consider it a gift....not that I'm so awesome, but you go along for the ride that I'm really offering to my friend C-Bag. But that's what community is about.
 
RJSakowski said:
OK. I had been under the assumption that alum/water was the recipe so I was concerned that you might have been using hydrogen peroxide instead. You could have called it hydrogen hydroxide (HOH) as well.

That reminds me of a story along similar lines. In my second semester freshman chemistry class, we got a new professor who had previously taught at the Air Force Academy in Colorado. It seems they they had a very high evaporation rate with the ethyl alcohol in the labs. The staff changed the name to ethanol which slowed the evaporation down for a time but it quickly resumed. Not to be deterred, they changed the name to methyl carbinol. The evaporation rate went to zero.
Click to expand...

I'm no chemist, but know a handful worth admiring...
Anyway, for the crowd in general, Ulma Doctor & RJSakowski in particular; ever hear a song with lots of chemicals in the lyrics? Read and/ or listened to, might will be quite some time to forget.

TinyURL.com - shorten that long URL into a tiny URL

preview.tinyurl.com preview.tinyurl.com

 
C-Bag said:
Where's the smiley with the head exploding.............!
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Waddy ya want, The Walking Dead?
Can't think of another show needing a lecture hour to review details; says something about the viewership. Not me. There are two where I spend Sunday evenings. We are working, TV in next room, so a lot of chitchat filters through.
 
Toolmaker51 said:
Anyway, for the crowd in general, Ulma Doctor & RJSakowski in particular; ever hear a song with lots of chemicals in the lyrics?
Click to expand...

Hey I like that Warren Zevon song, never heard it before.

But I have heard this one:

-brino
 
brino, you on Spotify?
I'd gladly PM user name, holding kind of vast library all manner of great finds. Meanwhile, some posts beg for a certain bit of music, being self assigned Dispenser of Merriment and Deeper Messages.
Loss of Mr. Zevon also marks loss of one incredible wordsmith. He knew end was near, with album such as My Ride's Here.

Enjoy Every Sandwich
 
brino said:
But I have heard this one:
-brino
Click to expand...
... and then there's a much shorter "earlier" version, which he attributes to Aristotle, that I found on an obscure recording: "There's earth and air and fire and water."

Are we off-topic, or what? :)
 
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