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  #21  
Old 05-08-2018, 02:30 PM
dwmh dwmh is offline
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Hi Leif
Hope I can offer some help, but forgive me if I'm telling you stuff you already know.
Your templates will be easier to bend to shape if they are not as deep (not as wide) also you can start by cutting them curved, so they need less stretching/shrinking.
I agree that a hollowed stump can get a lot of shape in as it stretches and shrinks together, it is then smoothed out on the wheel.
Regarding reverse curves you have made a good start and I'm sure you know it is achieved by stretching the edges. I have shown some pictures of a reverse I did just on the wheel. Though it is 1.6mm 1100 Ali (half hard), which is easier then the steel you are using.
Stick with it.

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  #22  
Old 05-08-2018, 03:37 PM
Turbo57 Turbo57 is offline
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Thanks David, no i am greatful for all hints i can get, i am a noobie on real metalwork, i have only used hammer and handtools in smaller parts earlier and welded them together when i repaired my cars not as pro just as a hobby for many years.I had a dream i have a chance to buy some better tools but could not afford that when childs was younger. Now when they have leaved the house i have the time to spend and build my machines just for fun and are trying to
learn metalwork the right way
Again thanks for your advices, i am greatful for all help i can get from more skilled metalworkers and will try to do it as you say
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  #23  
Old 06-22-2018, 03:49 AM
Turbo57 Turbo57 is offline
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Not so much time to spend on my fender, but it is close now with the reverse curveName:  DSC06306.jpg
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I have some problem to manage the last part to fit on fender, tried everything now but not found the right way to do it
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  #24  
Old 07-30-2018, 05:42 AM
Turbo57 Turbo57 is offline
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I realize that i need more tools so i made some pucks
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Not so fast yet but little on the right way
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I still need lot of training
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  #25  
Old 07-30-2018, 08:23 AM
Oldnek Oldnek is offline
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Hi Leif, those panels look pretty sweet, just a little tip is where the panel is touching you need to wheel more in that area. Keep it up as looks like you are getting the hang of it.
Like they say, practise and making them wrong is learning how to make them right.
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  #26  
Old 07-30-2018, 04:29 PM
Turbo57 Turbo57 is offline
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Ty John kind of you, is it on the reverse curve you mean i shall wheel more or, i have tried both that and stretched them with my leather bag and hammer ?
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  #27  
Old 07-31-2018, 02:49 PM
dwmh dwmh is offline
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Leif
The reverse isn't touching in the middle of the valley so it needs more shape, which you do by just stretching the edges, usually using the English wheel. Once you have enough shape in you can rearrange the panel to fit both curves.
You are making good progress though, on what is a tricky shape. Well done
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  #28  
Old 07-31-2018, 06:04 PM
Oldnek Oldnek is offline
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Quote:
Originally Posted by Turbo57 View Post
Ty John kind of you, is it on the reverse curve you mean i shall wheel more or, i have tried both that and stretched them with my leather bag and hammer ?
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Stretch more on the yellow Zone to bring the red area down.
Your are doing really well.
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  #29  
Old 07-31-2018, 07:33 PM
onya onya is offline
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Hello Leif,

I am liking the fact you are willing to tackle these tricky panels because I am learning from you and the other guys input, keep up the good work mate.
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  #30  
Old 08-01-2018, 12:05 AM
BTromblay BTromblay is offline
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Hi Leif,

On the first reverse curve I had done, I learned a valuable lesson. A critical point of a reverse is the no blow or what I call the neutral zone. The neutral zone is the low spot thru the curve, if you ran a pencil on the surface, it would follow the low spot.

You only stretch on either side of the neutral zone and the reverse will form quickly. When you wheel thru the whole panel, you will loose everything you try to gain with the reverse. If you over form the reverse, you can take shape out by stretching in the neutral.

Hope that makes sense, my shop got brighter when the light bulb went off for me with my project.

Bill
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"Remember, the camel was a horse, designed by a committee" My mentor and friend, Gil Zietz Micro Metric Machine.
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