On Tue, Jan 16, 2024 at 8:01 PM, davesmith1800

<davesmith1@...> wrote:

Doug Pfaff

3:47pm? ?

That'd be a #3 Morse Taper

Have any relatives living in Fresno or Clovis California?

Dave?

Groups.io

?7x12MiniLathe Messages

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Re: minilathe for children.

mike allen

11:10am? ?

? ? ? ? 6L6 , 12AX7 , if a kid knows what those are for he's got a chance . Like ya mentioned robotic's seem to get kids interested . The Arduinos & Raspberry pi's seem to be getting more & more popular with kids today . I've been trying to teach my self arduino for a couple of years now & if I was graded I'd be taking Arduino all over again & again . I think Nixie tubes are a gateway to electronice for some . They see a Nixie tube clock that they think is bitchin but their expensive , so they watch some youtubes & get a kit & build one , then they think hmm maybe I'm on to something here . I never had a new computer till @ 7-8 years back , I always made ours . I also made several for several other familys & some folks that could never afford one back in the late 1990's early 2000's . One of my sons was always lookin over my shoulder as I built them askin questions & finally by the time he hit Hi school he had built several for himself & friends . He decided he wanted to learn to be a programmer for his career , He had one teacher that didn't like him & constantly ignored him in class would tell him he was askin stupid questions & after a semester he said screw it & walked away from programming . I guess what I'm trying to say with the last part of my rant here is that without a solid foundation that a kid can ask & learn from some of them don't have a chance .?

I still have a tube tester.?
Last year project was designed and built [b] Transistor VTVM.? Works great[/b]?
I post on

Dave?

On Tue, Jan 16, 2024 at 3:42 PM, Thomas Key

<takey89@...> wrote:

I have a Homier Speedway 7x10 mini lathe and would like to know what Morse taper the headstock has.?

Tom

Absolutely !

heirge

On Tuesday, January 16, 2024 at 11:48:18 AM PST, Ralph Lehotsky <ralphlehotsky@...> wrote:

I think it would be good for the high school systems to reinstate a modern version of "metal shop" and "wood Shop" back into their curriculums. There are very few trade schools left in the country, so college dropouts have nothing to fall back on, and if they are lucky enough to find a job, they have to trained there.? All kids cannot be employed in computer science, and there is a definite need for skilled operators in todays manufacturing world.

Just my humble opinion,
ralphie

On 01/16/2024 3:46 PM EST chrisser via groups.io <chris.kucia@...> wrote:

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"I remember one of the principals I worked for saying “those who can do, and those who can’t take shop.” He also sent his lots of his personal items down to us for repairs."

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I can't help but laugh.? When I went to college, during orientation while parents were still around, the dean gave a little presentation.??

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During part of it, he said "Those who can do, do.? Those who can't do, teach.? Those who can't teach become administrators".? My Dad thought that was hilarious (I was the first in my family to go to college)

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In retrospect, I'm thinking the Dean had more wisdom than the Principal.

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Another education story I have involves my Mom.? She insisted I take typing as she was a receptionist/typist and was sure it would make me more proficient in college typing papers.

Few years after I graduated, she ended up being on school admin staff and they were cancelling the typing classes.? The head science teacher said that typing didn't make sense to learn, as we'd be talking to computers soon enough that typing will be obsolete.? Mom disagreed, but had no power to do anything about it.??

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This was in the late 80s.? I graduated from college in 1990 and went right into IT.? Ironically, I never had to write a paper in college, but I can sure out-type most of my IT colleagues, both in speed and accuracy, which has been immeasurably useful and continues to be.

I feel sorry for the kids educated in the years since who never learned to type because some high school science teacher couldn't predict the future very well.

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On Tuesday, January 16th, 2024 at 3:33 PM, Thomas Key <takey89@...> wrote:

I was a HS shop teacher from 1971-2008, in drafting, woodworking, plastics technology and a little metals. At my last school we taught plastics, wood, graphics, drafting, electronics, metals, aeronautics and auto. Our department had 12 full time teachers and all our classes (72 classes each day) were filled.

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In the late 80’s early 90’s we got a new superintendent who decided every student needed a college education, which meant voc ed needed to go. At the same time teacher training programs for industrial studies were closed which excelled the demise of shop classes.

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I have a good friend, much younger than me, who is very involved in AI and contends it will eliminate a HUGE number of computer science jobs. However, those with “hands on” skills will be in high demand.

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Hopefully school districts will be willing to rebuild their vocational skills programs and be able to find qualified instructors teach them.

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Side note…one of my sons who lived for metal shop in HS went to Cal Poly SLO and earned a degree in international business. He hated working in an office so found a job building metal plating labs, then moved on to construction. Almost ten years later he decided to go back to school and earned a BS and MS in mechanical engineering. After graduation he once again ended up in a cubical crunching numbers on designs for space stuff. Once again it was not his cup of tea. But all has turned out well and he now has a job that he describes as “HS metal shop on steroids”. He designs and fabricates specializes instruments for companies like Lawrence Livermore Labs. He uses lathes, mills, grinders, welders, etc and is in 7th heaven.

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I remember one of the principals I worked for saying “those who can do, and those who can’t take shop.” He also sent his lots of his personal items down to us for repairs.

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Thanks for reading.

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Tom

On Tue, Jan 16, 2024 at 11:48 AM Ralph Lehotsky <ralphlehotsky@...> wrote:

I think it would be good for the high school systems to reinstate a modern version of "metal shop" and "wood Shop" back into their curriculums. There are very few trade schools left in the country, so college dropouts have nothing to fall back on, and if they are lucky enough to find a job, they have to trained there. All kids cannot be employed in computer science, and there is a definite need for skilled operators in todays manufacturing world.

Just my humble opinion,
ralphie

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?

I was a HS shop teacher from 1971-2008, in drafting, woodworking, plastics technology and a little metals. At my last school we taught plastics, wood, graphics, drafting, electronics, metals, aeronautics and auto. Our department had 12 full time teachers and all our classes (72 classes each day) were filled.

In the late 80’s early 90’s we got a new superintendent who decided every student needed a college education, which meant voc ed needed to go. At the same time teacher training programs for industrial studies were closed which excelled the demise of shop classes.

I have a good friend, much younger than me, who is very involved in AI and contends it will eliminate a HUGE number of computer science jobs. However, those with “hands on” skills will be in high demand.

Hopefully school districts will be willing to rebuild their vocational skills programs and be able to find qualified instructors teach them.

Side note…one of my sons who lived for metal shop in HS went to Cal Poly SLO and earned a degree in international business. He hated working in an office so found a job building metal plating labs, then moved on to construction. Almost ten years later he decided to go back to school and earned a BS and MS in mechanical engineering. After graduation he once again ended up in a cubical crunching numbers on designs for space stuff. Once again it was not his cup of tea. But all has turned out well and he now has a job that he describes as “HS metal shop on steroids”. He designs and fabricates specializes instruments for companies like Lawrence Livermore Labs. He uses lathes, mills, grinders, welders, etc and is in 7th heaven.

I remember one of the principals I worked for saying “those who can do, and those who can’t take shop.” He also sent his lots of his personal items down to us for repairs.

Thanks for reading.

Tom

On Tue, Jan 16, 2024 at 11:48 AM Ralph Lehotsky <ralphlehotsky@...> wrote:

I think it would be good for the high school systems to reinstate a modern version of "metal shop" and "wood Shop" back into their curriculums. There are very few trade schools left in the country, so college dropouts have nothing to fall back on, and if they are lucky enough to find a job, they have to trained there. All kids cannot be employed in computer science, and there is a definite need for skilled operators in todays manufacturing world.

Just my humble opinion,
ralphie

A question arises "How precise do wooden threads need to be?" These are wooden Jogenson clamps? Bill

On Tue, Jan 16, 2024 at 12:17?PM mike allen <animal@...> wrote:

Depending on the length of the thread & diameter of the piece ya may be needin to use a Follower rest in the setup .

good luck , & remember pictures or it didn't happen

animal

On 1/16/24 8:36 AM, Bruce J wrote:

On Jan 16, 2024, at 12:39 AM, DAVID WILLIAMS via <d.i.williams@...> wrote:

Dear All,

I realise this is both part Mini lathe and part wood lathe. But to me the metal lathe part is more important. Hence my question to you all.

I have a couple of these old wooden clamps - probably antique. They are just like the metalwork ones we use, but much much larger. One has a severely damaged (external) threads.

I would like to try(?) and cut the replacement long wooden thread on my 7 x 12. So, I bought a second hand thread chaser on eBay. It’s 6 TPI and according to the chart on the Little Machine Shop site - the gear set up is no problem on my imperial lathe.
[JFI it’s Real Bull model purchased from Chester Machines (in the UK) some 20+ years ago. If that’s at all relevant?]

You can chuck an appropriate dowel and single thread it to start, but make sure what thread it is it might be some form similar to an acme thread. You may well have to grind your own threading tool.

You can use a chaser tool, (they used to be used for cutting threads in metal, too) but be prepared to practice. In metal they were also often used freehand ;ike on a wood lathe.

With the coarse thread, you may well be better off with a hand crank on the lathe, too.

The thread chaser cuts multiple threads at the same time and the tool (normally hand held I understand) needs to be held at ~ 90 degrees to the thread, unlike the usual angle for cutting one side of a metal thread. OR, if you are doing it by hand, do you angle the thread chaser so it cuts a series of slightly deeper threads. Thus the tool needs to be held in the tool post at a similar angle?

I’ll have to dig out my wood lathe books, but this article on chasing threads pn a wood lathe indicates not.

Assuming I can sharpen it correctly and clamp it to the tool post, can anyone offer any suggestions or guidance? Do you cut it in multiple passes, in a similar way to a metal thread?
I assume I’m going to have to make and use some sort of a travelling steady. My idea is to clamp it in the chuck and use a small freely rotating chuck at the tailstock end.

I believe I can get a much better quality and accurate thread using the gears than trying to use it hand held - on a very long tool holder, the same as the ones on a wood lathe. I have to check but I think the wood for the screws is normally Beech, if that’s relevant?

You want very hard wood Beech is one, or lignum vitae etc. the article above lists some suitable species.

Thank you in anticipation.

David of Abingdon(UK)

--

Bruce Johnson

"Wherever you go, there you are." B. Banzai, PhD