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Old June 29th 16, 05:27 AM posted to rec.bicycles.tech
John B.[_6_]
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Posts: 2,202
Default winged dome nut (photo) and "master wrench"

On Wed, 29 Jun 2016 02:06:00 +0200, Emanuel Berg
wrote:

Today I saw an interesting dome nut:

http://user.it.uu.se/~embe8573/photos/nut-thin.jpg

No sides for a hex spanner to grip!

Instead two wings, like a big wing nut only
taller and with a hole for the gear chain.

It was way too hard to remove by hand power (if
that is the thought). So I used the tool on the
photo, which I suppose is for bolts and hex
nuts, but as it grips like a pipe wrench when
you pull, I thought it would eat into the soft
metal, which it did. (Yeah, I'm not gonna use
the nut again.)

I have learned thru the web the tool is called
a "master wrench" - I don't know how common
that is in your countries, here it is virtually
unknown as everyone uses the adjustable wrench.


As an aside, your photos are almost always too dark and usually with
shadows which make it difficult to see details.

The so called "master wrench" looks more like something that sounds
like a good idea and doesn't work as well as it sounded like it would

I prefer combination spanners which you don't
have to fiddle with. Especially outdoors or in
a sub-zero degree workshop, fiddling with tools
will kill you hands. Even everywhere else,
I don't enjoy it. But in the field if
I couldn't bring the entire collection of
priceless combination spanners I would prefer
the master wrench since it is at least
self-adjustable...

Yeah, why *are* people so fond of the
adjustable wrench?


Basically, I think, because they only occasionally use a wrench and
can keep a couple of adjustable wrenches in the drawer which will
probably fit everything in the house.

Professionals don't use them because they slip and they are larger and
heavier than an equal size conventional wrench.

And besides, they don't look "professional" so you don't want to put
them in the top of your tool box where everyone will see them :-)
--
cheers,

John B.

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