ok you old timers

[Thee Rickster ™]

Ahhh,

 

I found the more used chart.

 

Dis one brings back memories, cutting compound

angles manually, 3 angled ribs etc.

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[Guest]

quote:

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I can't say much.I too draw instead of calculate nowadays.

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storkie, using crayons doesen't count.

[Müřlıń®]

I lost meh trig book bout 15 years ago

 

Bout the time I started using the ' puter

 

Seeing those pages sure brings back memories though thanks, Rickster

 

Mold making used to be real fun, we got to operate all kinds of neat gizmo's to do our job...

 

Someone ought to write all that stuff down before it is forgotton....

[Storkman]

quote:

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storkie, using crayons doesen't count.

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Nope got a new calculator.

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teh knife is for subtraction.

[Jimmy K]

quote:

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SOHCAHTOA ring a bell?

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yep,

 

Some Old Hippie

Caught Another Hippie

Trippin On Acid

 

this is how our "cool" math teacher taught us back in the '70's lol

[Die Sinker]

That page is probably familiar to many "old-timers"!. Right out of the Illinois Tool Works trig tables booklet. I've been retired for four years now and I still have my original book dated 1965. The foreman would always hand these out when you first started your apprenticeship. With computers now, nobody does it "manually" anymore. It IS kinda sad.

[Zoober]

quote:

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The foreman would always hand these out when you first started your apprenticeship

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What's an apprenticeship?

 

My Dad's first project in his apprenticeship program was to take a rough square of 17-4, and a box (literally 100's ) of files, and file this to a ball bearing, with a profile tol of .06

He said it took 3 wks to achieve.

[Thee Rickster ™]

One of my old bosses had to machine a 3" x 3"

block of steel.

 

His teacher beat the crap out of it with a

large ball peen hammer. Then told him to file it

back to a perfectly square cube.

 

If it was not to his likeing he bashed it up again

 

If the cube ended up being smaller than 1 x 1.

ya had to start over untill you perfected the

cube.

 

They should bring that back to the schools.

[LaszloK]

They will probably be giving away the Carr Lane Trig books at the Howell Macduff booth at Eastec

next month. Good conversion factors section when not near a computer.

[gcode]

The Machinist course I took in the Marnines had

some good stuff. If you took your hand off the chuck key while it was in the lathe's three jaw chuck, the instructor would throw it way out into

a grassy field behind the shop.

Then you had to go find it... carrying 150 pounds

of toolbox.

If you set the toolbox down before you got back

with the key, you got to do it again... and again ... and again. You only left the key in the chuck once.

[Thee Rickster ™]

Is this just in Canada?

 

when I was an apprentice...

 

leaving a chuck key in the lathe and walking

away cost you a '12 pack of beer.'

 

The journeyman would send you imeadiatly. if

it were before 11 am then thats when you went.

 

We would all share them at the picknick table

behind the shop,(out of public view)

(sometimes the owner joined us)

 

some fridays we would forget on purpose

 

J-men never bought beer unless we were at the

pub.

[Thad]

quote:

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They should bring that back to the schools.

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Why? That's idiotic AND a waste of time.

 

Thad

[Thee Rickster ™]

It was a test, an old test...lol

 

A pattern maker used to shape things by hand and

eye.(rad gauges, hermaphrodite calipers etc)

 

They separated the talent this way

 

But i see your point, all rookies are talented and

the least bit lazy.

[Zoober]

quote:

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They separated the talent this way

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True Rickser.....

How many of you out there have a shop full of machinists that can truly run a jig bore (to .00005), a surface grinder, ID/OD grinder, custom grind edges on their tools (by hand on a pedestal grinder), know how hard to HT A2, etc, etc.

 

The pool of REAL machinists has become-for all practical purposes.......NIL!

As my dad used to say, "if there is a machine in my shop you can't setup and run, then you are just an operator. Do not dilute the word "Machinist" with your lack of talent"

The first time he told me that, I was 14, learning a DeVlieg jig bore.

[Thee Rickster ™]

Hey Robert, do you remember the Shaper?

 

A Wise ole Journey man once told me,'your a rookie

until I say you not a rookie'

 

When that happened I had to do all the work...lol

 

I'd be happy if half of the new generation could

take a course on de-burring.(properly de-burring)

[Zoober]

Ya mean that old single point monstrosity? No, why do you ask?

Also remember the old tracer mills prior to nc equipment, and the bank of leather belt driven lathes....

[Thad]

quote:

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How many of you out there have a shop full of machinists that can truly run a jig bore (to .00005)

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Robert, surely you've mistakenly added an extra zero in there.

 

Thad

[Zoober]

No, Thad, I really mean 50 millionths. Air gages, 68 deg controlled environment, the works.

[Guest]

quote:

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68 deg controlled environment,

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You'd be amazed, well maybe you wouldn't, at how many noobs don't think temperature matters or even figures in to it.

 

[Thad]

quote:

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Air gages, 68 deg controlled environment, the works.

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That was going to be my next question.

 

Thad

[Zoober]

You gotta cover your bases here......

Too many sharp people. BS don't last long on this board

[Thee Rickster ™]

They just threw out the 'power hacksaw' when I

started.

 

I used to mold prototype torque converters.

The blades were an elaborate 'Panograph' setup.

patterns and stylus' were 4:1

 

18 blade, ring seal off sections, fixture had the

location dowel, the rings that fit in to the mold

had 18 concentric dowel locations.

 

Bout 3weeks to finish(no flash seal off)

 

Today both mating rings 3HRS on the CNC

[crazy^millman]

I remember cutting internal keyways on a shaper before. You ever seen a bridgeport laid over at 90 degree and fly cutter put in the bore to cut the inside of a babbit bearing to create the correct spherical radius needed. I was teaching some guy 20 years older than me how to create a big radius with a fly cutter just by tilting the head a couple degrees to make a bending die for sheet metal. Just yesterday was showing a guy how to cheat a part using shim at the center to get a part to run true after heat treat on a critical diameter to be finished machined.

 

Back when I came through school I got my lunch money every week by sharping everyone lathe and mill tools on the grinders. $1 a tool was what I charge and would get $20 to$30 a week. The 1st thing we had to do was take a hacksaw and cut off a piece of 1" square stock and make a perfect 1" block by hand with a file, machinist square and sandpaper to a 16 finish. I think it took 2 weeks to finish. We would have to make all types of things by hand. My Dad still has the 5 point star I did laid out by hand and cut out with a hacksaw and all finished with files and sandpaper to a 16 finish.

 

WE had to cut right and and left hand threads at 4 different diameters to shoulders, level a 16' conventional lathe which no one was able to do for 5 years before I went to school. Teacher was impressed when I took the others students blocks and shims pulled them all out and started from scratch. I think it took me about a week, but it was .0002 per foot taking the cross slide all the way down the machine which most people do not even know is the right way to level a long machine. Most people do spots on a long machine, but on a long lathe the cross slide is what needs to be level over the distance of the machine.

 

How many know to put the compound slide at 1-1/2 degrees to get .0001 adjustment on diameters when turning? I have seen guys struggle with the concepts of cutting threads by feeding in the compound slide at 29.5 degree to standard threads and 14.5 degrees for acme threads. How about mounting the threading tool upside down and cutting with the spindle in reverse to cut threads right up to a shoulder without running the risk of hitting the shoulder since you are cutting the threads away from the shoulder and still making right hand threads?

 

Old schools is only old school only if you ever knew what the old school way was.

[McLaren]

This thread rocks. I've been programming CNC mills for 10 years and have learned more from this thread than I have in a long time. You "old timers" are crazy.

 

I don't even know what a jig bore is, never seen an od/id grinder, saw my first blanchard grinder a couple years ago, practically never touch manual mills or lathes. I think I have cut threads on a lathe twice, never grind tools, can't sharpen a drill unless it's with a darex or drill doctor.

 

Actually I'm embarrassed to even post this, but had to give credit to the guys that really know what they're doing

[BernieT]

 

 

How about the Deckel KF2 pantograph??? Used to use one regularly. 4 years ago (after not using ours for the previous 5 years) we sold it for less than $1k. They are just boat anchors now.