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  #21  
Old 09-20-2019, 11:33 AM
Jaroslav Jaroslav is offline
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Thank you Bill.
Don't worry. I can make a separate thread for this machining technique. I've been using this technique for over 40 years. If interested, I can post a few cases that I normally use, but I don't know anyone else. When I talk to experts, they think I'm crazy. I understand them, they haven't seen much in practice yet, but they have the certificate.
This case did not need further protection. The force of the jaws is large enough. I worked I was taking a small chip and carefully. But without fear.
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  #22  
Old 09-20-2019, 12:22 PM
crystallographic crystallographic is offline
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Jaro,
Nice idea to make the sheet conform and then trim the part out of it. I like this thinking very much.
I lost my 94 year old machinist, Milo Franklin, in July. He ran a shop of 35 men for Schrillo during WW2 making aircraft parts. Then started "Milodon", an auto racing products company with his buddy "Don" in 1957. Quit that later on and started his own company, Experimental Research, which he ran until two years ago.

He made so many odd parts for me over 35 years, and now his son runs the old hand-crank machine shop.
It's so great to have the old knowledge and experience, Jaro. Good to see you doing it.
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  #23  
Old 09-20-2019, 04:41 PM
Jaroslav Jaroslav is offline
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Thank Kent and all for your compliment. At the beginning I really didn't know how to start. My head is bursting with ideas. Unfortunately, it has been very economik unpleasant for me so far.
Of course I am still learning. You see that in the stupid things I make, but I go into more complicated things. The basis is to understand the material. So far, I'm doing it. I must admit that this is a demanding field.
Today I made the twisted bar. After cutting, the profile behaves stably. I didn't have time for the template again.
In the next week I will finally make an exact template and mold the molding.
I am quite looking forward to the expression of the customer. He had a big production problem with it.
The sample that lend me for copying is welded from about six pieces.
Very big win for me that I figured out a simple way to do it.

Thoughts from these pages inspired me very much.

DSC01564.jpg
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  #24  
Old 09-20-2019, 08:33 PM
skintkarter skintkarter is offline
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Nice job Jaroslav!

I served my time as a fitter and turner back in the 70's in a small rural precision engineering business, which happily is still serving the community today. We did some pretty sketchy stuff (pre OSH) to accommodate weird things in machines which were really not designed for the purpose. Innovation and necessity. Nobody died...
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  #25  
Old 09-21-2019, 01:28 AM
Jaroslav Jaroslav is offline
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Thank you Richard.
Sloth is the mother of all movement and development. If you have information on how this should be done correctly, you are sure that you know how to reach the goal. But laziness tells you that it is too much work and time to reach the goal. Good. You change the design, look at it in a different way and ask questions. Why did they do it ??? What options do I have? And the idea of how to get the result is born. I meant a good result.

Some "surrogate" solutions stop my mind when I see them, but the functionality and circumstances of their origin must be taken into account. But they do lead to lessons. More heads know more. And creativity is fun.
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