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  #11  
Old 04-15-2020, 04:01 AM
Jaroslav Jaroslav is offline
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Perfect work Kent. Your dimensions are big.

I found an interesting video from the industry. But he won't show the tool.



https://www.youtube.com/watch?v=1egmm_4Y3Rk
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  #12  
Old 04-15-2020, 07:21 AM
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red baron red baron is offline
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I like your rolling table top, willing to give any info on it?
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  #13  
Old 04-15-2020, 09:47 AM
crystallographic crystallographic is offline
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Originally Posted by red baron View Post
I like your rolling table top, willing to give any info on it?

Hi Mike,
I got the two tables, complete, from this outfit:
https://www.cisco-eagle.com/catalog/...nters-35-frame


After also considering:
https://www.hytrol.com/Products/Accessories/Transfers


Timely delivery with table height needed, leg angle variability and ball-ball distance of 4in.
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Last edited by crystallographic; 04-15-2020 at 12:41 PM.
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  #14  
Old 04-15-2020, 10:11 AM
crystallographic crystallographic is offline
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Originally Posted by Jaroslav View Post
Perfect work Kent. Your dimensions are big.

I found an interesting video from the industry. But he won't show the tool.



https://www.youtube.com/watch?v=1egmm_4Y3Rk

Thanks Jaro.
Back when I first started this job .... I was thinking that since I have (distant) access to a 10ft. power roll with 6in dia. rolls and so I thought - with a stack of metal I could experiment and then push buttons instead of metal. I thought about it for so long that I started with what I had ....


Choices, always choices ....
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"All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919.

Last edited by crystallographic; 04-15-2020 at 12:39 PM.
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  #15  
Old 04-15-2020, 01:57 PM
crystallographic crystallographic is offline
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Default "Setting the shape"

"Setting the shape"

I don't see this topic covered enough.
I have been working this technique as part of my Plan during this job, as it is essential for this type of part (16ga CR steel).

"Make a plan, work the plan, stick to the plan" -(told to me during a TX wksp by a long-time Texas oilfield fabricator.)


P1030481 copy.jpg
Working the shape in the Hammer


P1030487 copy.jpg
"arranging the shape" on the form


P1030614 C.jpg
"Setting the shape" using a hand hammer.


P1030814 copy.jpg
Checking the fit


P1030993.jpg
Using a straight edge goes back to the original model, analyzing the shape as it is.


P1030873c copy.jpg
"Setting the shape" is a term from the "pressforming" industry.

On thicker-than-autobody steel sheet currently in usage, the press dies come together slowly as the part is pressed, and as the steel work-hardens the press speed picks up a little bit. When the dies close, the press opens a bit and then thumps closed for a final time, "setting the shape."
At the college levels of materials science, terminology such as "elastic", "plastic/elastic", and "plastic deformation" are used to describe materials/metals being formed into shapes.
https://en.wikipedia.org/wiki/Deformation_(engineering)


(As part of our 4DayWorkshop Trainings students are issued "prep materals" which include, but not limited to, DVD instruction covering materials science and stretch forming.)


Hence, "arranging the shape" is separate from "setting the shape."
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"All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919.

Last edited by crystallographic; 04-16-2020 at 12:00 PM.
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  #16  
Old 05-27-2020, 06:49 PM
crystallographic crystallographic is offline
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Default basic twist

Forgot to include the basic twisted ribbon shape.


P1110756 copy.jpg

This is just a 2in wide X 36 long piece of .050 3003, marked lengthwise for two working widths of one-third total width, each. These edges are hammered consistently one end to the other, matching each other. The center one third is pretty much untouched. If your hammer blows are evenly spaced, evenly struck, and numerically match one side to the other then your twist will be even.

If not, then you get odd.

(ps, if you scrutineer closely you see one black center line .... I just eyeball off of the centerline for my thirds as I go. )
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"All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919.

Last edited by crystallographic; 05-27-2020 at 06:52 PM.
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  #17  
Old 05-28-2020, 03:19 AM
Jaroslav Jaroslav is offline
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Kent. I see you won't show us any cars for a long time.
Are you making someone DNA? A monument to someone in particular? For example, knocked man monument?
That job looks on long time work.
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  #18  
Old 05-28-2020, 05:35 AM
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Wow, that is one big long commision to undertake. I admire you for taking on things like this.
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  #19  
Old 05-28-2020, 12:05 PM
crystallographic crystallographic is offline
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Quote:
Originally Posted by Jaroslav View Post
Kent. I see you won't show us any cars for a long time.
Are you making someone DNA? A monument to someone in particular? For example, knocked man monument?
That job looks on long time work.

Jaro, I posted some car stuff a few weeks back - the Porsche GT3 racer with its new 4 corners in aluminum .


Otherwise, I come in each day and hammer accurately and consistently on the September Job,

P1110736 copy.jpg
8 large steel helical panels.



P1110733 copy.jpg
(and there are no "rapid traverse" choices on my machinery.... )
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Kent

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"All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919.

Last edited by crystallographic; 05-28-2020 at 12:14 PM.
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  #20  
Old 05-28-2020, 12:35 PM
crystallographic crystallographic is offline
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Quote:
Originally Posted by Gojeep View Post
Wow, that is one big long commision to undertake. I admire you for taking on things like this.

Coming from yourself, Marcus, this observation is sincerely acknowledged.
P1110749 copy.jpg
P1110746 copy.jpg
P1110744 copy.jpg


#6 is 90% done with 90% left to go, as airplane builders are fond of saying.
P1110751 copy.jpg


The last 10% is getting the complete fit to spec. Major nitpicking now, as the entire panel is in tension, like a set of piano strings - linear as they also are - and change the tension on either the box - or the board - or a group of 3 or 2 strings - and the rest of the strings respond.




Today I am getting again used to my "acquisition d'attire," last worn in March.
P1030528c.jpg
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Kent

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"All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919.

Last edited by crystallographic; 05-28-2020 at 12:40 PM.
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