-You- inserted sarcasm into my question. I had a pretty good idea that HF meant hydrofluoric acid. I was asking partly for those on the list who don't know what it is (and it is not guaranteed that the first Google result is the correct hit), and partly to remind people to spell out what they mean now and then.
I wasn't aware that "HF" was a "big fancy word".
I notice you said nothing about the part about hijacking the thread.
As for me being a troll, I'm the listowner, Einstein. Something you could have looked up easily enough. Dunning-Kruger?
Steve Greenfield AE7HD
your occasionally fed-up moderator
--- In Homebrew_PCBs@yahoogroups.com, "Todd F. Carney / K7TFC" <k7tfc@...> wrote:
>
> Google "hf acid." The very first item on the page--big as life--will answer
> your question and tell you all about it. Oh, I'm not a chemist, either. I'm
> just a guy of normal intelligence who knows how to use a web browser. I
> also know better than to broadcast my stupidity for intelligent people to
> see.
>
> Sorry about this peevish (look that up, too) response, but this kind of
> "Okay, ∗Einstein∗, what does that big fancy word mean, anyway?" attitude
> really bugs me. I actually think it's mostly trolls who do this kind of
> thing, so it's just one more thing to ignore.
>
> I must be in a "mood." I guess I better go solder something together.
>
> 73,
>
> Todd
> ------------------------------------------------------------------------------------
> K7TFC / Medford, Oregon, USA / CN82ni / UTC-8
> ------------------------------------------------------------------------------------
> QRP (CW & SSB) / EmComm / SOTA / Homebrew / Design
>
>
> On Mon, Mar 18, 2013 at 2:39 PM, AlienRelics <alienrelics@...> wrote:
>
> > ∗∗
> >
> >
> > OK, so keepitsimplestupid hijack's Ricks thread, and smilingcat hijacks
> > keepitsimplestupid's hijacked thread. Interesting.
> >
> > For those of us who are not chemists, what is HF acid?
> >
> > Steve Greenfield AE7HD
> >
> > --- In Homebrew_PCBs@yahoogroups.com, "smilingcat90254" <smilingcat@>
> > wrote:
> > >
> > > Calcium carbonate for that matter most carbonate will react with even
> > trace amount of hydrochloric acid remaining in your etchant. And yes it
> > will foam because CO2 is being released in the reaction. So if your
> > solution keeps foaming keep adding the carbonate. It will neutralize the
> > acid for safe disposal.
> > >
> > > Reaction of Copper chloride and Calcium carbonate probably will be much
> > slower than Copper chloride and sodium carbonate. But it should work. not
> > 100% plus sure.
> > >
> > > ∗∗∗∗ HF acid ∗∗∗∗
> > > I was in semiconductor manufacturing business so I'm quite aware of HF
> > acid. Very dangerous stuff. No you can not store in a glass. It will etch
> > glass. No you can not store in stainless steel container!!
> > >
> > > HF chemical burn is severe even at low concentration. It will penetrate
> > bare skin and the flourine ion will interact with the calcium in your bone.
> > HF will dissolve your bone under all the tissue.
> > >
> > > I didn't think you can buy it unless you can show you are a business or
> > a researcher of some sort.
> > >
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>