10:06 pm
November 4, 2010
A couple days ago I was looking at box joints and I came across this beautiful wing divider on Elmer Roush's website, which he lists as "16th century style."
http://www.elmerroush.com/html.....ders1.html
I looked at that wing nut and it got me thinking. I have the impression that in the 16th century internal threads were not very common, and you couldn't just go out and pick up a tap and die set. So how would the thread on that wing nut -- and the corresponding internal thread in the divider -- have been cut, back in the day? I can imagine making a tap, which could then be used to cut a matching die, and so on, but cutting the thread of the tap evenly enough and sharp enough, by hand, sounds like a pretty daunting proposition.
10:27 pm
May 13, 2010
They had a very special tool available that is very rare today.
The tool is called patience. Files can be used to make very accurate shapes if you practice and take your time.
As well I am sure that there were taps and dies sold by those that specialized in making taps and dies just like today, even though there were no standards. There was probably trading done as well, such as you can make a tap from my small die if I can make a tap off your large one.
12:03 am
NWBA Member
April 19, 2010
i can see doing it .. it would take patience but not as much as say forge welding a damascus gun barrel... you could even lay it out with lines and get a specific thread say 12 threads to a inch take a string wrap around your rod 12 times measure a inch from one end to the other then eyeball it till you get it even mark then file along line .. if you even got half of that leingth right it would be enuf to make a tap and with a tap make a die ... even if it turned out not exactly 12 tpi who would care .. your tap fit your die! it would make it hard for someone else to fix one of your bolts but then your coustomers would have come back for repairs....
10:18 am
November 17, 2010
2:30 pm
June 16, 2010
4:07 pm
March 22, 2010
My understanding is there is a limited supply and no new "patience" is currently produced... So there are a bunch of old guys someplace in the world, probably Italy and Germany... That are hording the worlds supply, so very little is left for the rest of us. In its place a sutiable subsitiute is often offered called "knowledge", however the problem with knowledge is it only works with some people. Many even if they are offered knowledge seem to have no ability to use it.
Whatever you are, be a good one.
Abraham Lincoln
4:27 pm
November 4, 2010
Speaking as someone whose version of a "power hammer" is a friend with a sledge, whose version of a press is a leg vise , and whose version of a belt grinder is a couple of files, a sanding block and a bunch of sheets of wet/dry :stomp:, I just have to say (and please understand that I mean this in a good-natured way) that it's kinda funny to see some of y'all going on about the virtues of patience. :confused: :bounce:
4:46 pm
NWBA Member
July 9, 2010
5:10 pm
August 14, 2010
It does occur to me that it would require patience to hand cut your own taps today when it would probably take about the same amount of time and be cheaper than the piece of drill rod to run to the hardware store, but back 'in the day', when there was no other option, patience wasn't needed: there was no other way to do it.
I am not dismissing the role of skill or knowledge in this. Those two factors often lead to something that looks to others like patience.
5:12 pm
March 22, 2010
Good point.... When its the way its done, its just what you have to do
Whatever you are, be a good one.
Abraham Lincoln
12:22 pm
November 4, 2010
For those who were interested enough to respond to this thread, here's a very cool photo I found a couple days ago:
http://www.forgemagic.com/bsgv.....T&by=
[Image Can Not Be Found]
7:00 pm
January 17, 2011
I can't remember offhand where I read it, but apparently many blacksmiths did use tap-and-die sets, but they were all hand-made. This caused huge problems because you couldn't use the bolt from one blacksmith and the nut from another, you had to make darn sure you kept them separate.
--------------------------
Keep your stick on the ice,
David Brandow
8:56 am
May 18, 2010
At the Powerhouse Museum in Sydney they have a Boulton and Watt Beam Engine (steam) when they were restoring/recomissioning it, they pulled every thing apart nuts and bolts and just chucked them into a bucket, when they came to reassemble it, yep all the nuts were custom made to fit only one bolt, bolt A only threaded into nut A etc, kept a couple of blokes busy for a heap of time, sorting out all the threads.
12:07 pm
May 14, 2010
I, also, am interested in old tools, and have collected a few over the years.
I have a (I think) tap and die tool that I picked up.... I don't remember where (or when). This is old, but I'm not sure how old, or how the small (more perfectly threaded) bolt (and its receiver) that tightens the larger die fits into the picture...
Grandkids and blacksmithing... Joy Joy Joy..............................YouTube Channel: djhammerd
4:47 pm
March 22, 2010
Phil;7143 wrote: At the Powerhouse Museum in Sydney they have a Boulton and Watt Beam Engine (steam) when they were restoring/recomissioning it, they pulled every thing apart nuts and bolts and just chucked them into a bucket, when they came to reassemble it, yep all the nuts were custom made to fit only one bolt, bolt A only threaded into nut A etc, kept a couple of blokes busy for a heap of time, sorting out all the threads.
I bet that was a real "lightbulb" moment for someone when they started picking bolts out of the bucket....
I know here in the us it was the auto industry that standardized fasteners... The SAE ( Society of Automotive Engineers) was formed in 1905, the vise president was Henry Ford but it wasnt until world war one that they adopted what we know know as the SAE ISO (International Organization for Standardization) system of National course (NC) and National Fine (NF) SAE pitches and the UNC and UNF or Unified National course and fine.... That also gave us the NPT or National Pipe Taper as well as
NPS National Pipe Straight... and many other standards we use today....
Whatever you are, be a good one.
Abraham Lincoln
10:26 am
August 5, 2010
I just watched an episode of the Woodwright's Shop on Sunday and it reminded me of this thread. Peter Ross demos hinge making as well as threading and tapping. The adjustable tool swages the metal, rather than cutting, to create the threads. Here's a link:
http://www.pbs.org/woodwrights...../3013.html
12:43 am
November 17, 2010
Randy Calhoun;7213 wrote: I just watched an episode of the Woodwright's Shop on Sunday and it reminded me of this thread. Peter Ross demos hinge making as well as threading and tapping. The adjustable tool swages the metal, rather than cutting, to create the threads. Here's a link:
http://www.pbs.org/woodwrights...../3013.html
Man, that's a great show. I didn't even know it was still on. I met Roy Underhill several years ago down in Englehard, and again on Ocracoke. Pretty neat guy. The show was always a surprise as to what he'd do that episode.
3:41 pm
June 9, 2010
One year I was heading home for xmas and my family wasn't getting along for some petty reasons. I decided I would make everyone a really nice wrought iron toilet plunger. I bought a bunch of hardware store plungers and had to tackle the problem of how to affix the rubber body to my 3/4" metal. The threads on the wood sticks were way to big for any dies I knew about so I just cut them in cold with a somewhat blunt chisel. I remember it being time consuming (there were like 10), but easy. The fact that the plunger head was rubber really helped because they conformed to my less than perfect threads, but man... they were on there good!
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