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JCG170
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Losing?
JCG170   10/31/2013 5:48:32 AM
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It seems like civilizations lose much over time.  Thank goodness our civilization has been able to retain and restore so many treasures from the past.  And thanks to those who carry on discovering new techniques, we can possibly now use the marvel of 3-D printers to spit out some of Mr. Henry T. Brown's interesting movements.

Thanks to those who keep this information available because there are far too many who are ignorant of the value of keeping such precious past secrets.  And thanks for the interesting read Max.

alvangee
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Edison type...
alvangee   10/28/2013 7:11:22 AM
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I understand this is off-topic, but after noticing "Thomas Edison types" couldn't help myself. After Oatmeals' comic about Tesla just can't take Edison like it's something good. Sorry if the link is inapropriate here. http://theoatmeal.com/comics/tesla

Back to the topic. Yes, we're moving to the future where the world is fully dependent on computers and electricity. Also the technology is so complex we no longer able to fix stuff without computers and internet. There were similar topic on APP about modern cars. So digitizing stuff is good, but again it's completely internet-dependent.

David Ashton
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Re: Lost Secrets
David Ashton   10/27/2013 5:02:47 AM
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Hi Bob....I was near there not long ago, at Salamander beach I think, for a company do for a night.  Nice part of the world.  If I get up there again I'll try & look you up.  Cheers

salbayeng
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Re: Lost Secrets
salbayeng   10/27/2013 3:57:18 AM
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Hi David ,

I'm up at Salamander Bay.

The SBS show was about a month ago, in the Mythbusters slot (7:30 Tuesday).

Cheers, bobt

David Ashton
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Re: Lost Secrets
David Ashton   10/26/2013 4:56:17 AM
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@salbayeng.... >"There was a show on SBS recently...."  

Missed that one, sounds interesting..... but illustrates my point....making stuff from scratch is not easy.

 

You're obviously in AUstralia somewhere, to get SBS....where are you?

 

Cheers

salbayeng
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Re: Lost Secrets
salbayeng   10/25/2013 5:17:09 AM
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@david

There was a show on SBS recently where some English presenter made stuff from scratch: 

e.g. electric light bulb  , a flymo ,  a toaster , a pair of joggers. etc.

He was pretty inept, a PHD and not an engineer I guess , and he cheated a bit  (he only made 3 critical parts of each)  

But to his credit he made the mower blade from iron ore, he smelted it to spongy iron, then hammered it into shape. 

For the toaster element he took some water from an abandoned nickle mine, plated it out in a bathtub, then smelted and  rolled it into thick wire, (but then he cheated and swapped in resistance wire). 

He dug up the mica from rocks on the side of a hill. 

-----

I think you would be capable of making iron spearheads ,  the Eqyptian method using a cupola is easy enough, it's just a clay vertical tube, filed with iron ore and charcoal, you light it up from the bottom, come back a day later and pick out the spongy iron. Reheat the spongy iron in a hearth (with some bellows for more air) , and beat it with a hammer to the required shape.

 

 

 

salbayeng
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"international textbook company"
salbayeng   10/25/2013 4:37:48 AM
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I picked up three textbooks from International Textbook Company on Ebay , (based on a sample of the drawings). 

They are all "near mint" condition , probably never been read. All hard bound with embossed covers.

185  Gear calculations and cutting , 1934 first pub 1914 , with many beautiful drawings like the one in the blog.

503B  Locomotive valves and valve gears , 1937 first pub 1920 , with many beautiful drawings of those complicated bits of valving found on locomotives.

603C Industrial Electronics , 1949 first published 1941 , mostly thyratrons and magamps. Has a forward looking paragraph on pentodes and tetrodes!

-----

I also have Philbricks Palimpsest (1955)  which describes the various uses of the first? op-amp the K2-W

-------

Seems like the old authors spent a lot more effort writing books back then.

 

pconti
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Shop Class as Soulcraft
pconti   10/15/2013 12:31:52 PM
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Shop Class as Soulcraft

For those interested in the topic of "losing the masters" this is a enjoyable/interesting/entertaining read.  If you happen to enjoy motorcycles it's even better.  My own poor summary of the basic thought of the book: "At one time the craftsman could choose the tree to cut down based on his knowledge of wood grain and the affect on the finished wheel he was going to produce".  Also the author gives his take on the loss of these "tradesmen".

 

brlamont
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History
brlamont   9/23/2013 11:08:24 AM
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We lament the loss of History with each newborn child.

Max The Magnificent
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Re: The Olde Books and Dover
Max The Magnificent   9/14/2013 12:54:06 PM
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@sixscrews: This is a 1963 reprint of a book first published in 1878. The original was written in German and appeared in 1875.

I find in mind-blowing that these books were so influential that they've stayed around this long. I would be "over the moon" if my books did 1/2 this good.

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