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  #11  
Old 11-06-2020, 01:04 PM
Stretch Stretch is offline
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With the shape beaten into submission, a little filing and dressing up the highs and lows was in order:

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  #12  
Old 11-06-2020, 01:16 PM
Stretch Stretch is offline
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Similarly, the tail required a fair amount of reshaping. Unlike the original Spitfire shape, the tail needed to form a sharp point to give the impression of movement and speed...

This section was shaped over an old school vice anvil, that tapers to a point.



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  #13  
Old 11-06-2020, 01:56 PM
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I really like what you're doing, Matt- especially the reinterpretation of shape to convey your concept. Thanks for posting. I'll keep watching.
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  #14  
Old 11-06-2020, 02:15 PM
dwmh dwmh is offline
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An interesting approach, clever thinking. Can't wait to watch the progress.
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  #15  
Old 11-06-2020, 03:16 PM
Stretch Stretch is offline
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Once I’d smoothed out and flowed the shape, I gave one half a polish to take stock of shape and perspective. Sometimes it’s good to just stare at something for a good while and visualise the finished article. Offering up the item to a contrasting background is a good way to really see a shape and it’s flow:



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Last edited by Stretch; 11-06-2020 at 03:53 PM.
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  #16  
Old 11-06-2020, 03:24 PM
Stretch Stretch is offline
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The two identical halves were then welded together, with a central strengthening piece sandwiched down the middle and forming part of the weld. The aim here is it reduce the shrinking and warping from the welding process, as obviously, thereís no chance of hammer and dolly work once the two halves are joined. Fortunately the central piece worked and deformation was minimal.

Once the welds were filed and dressed, the fuselage was sanded through the grades to 1500 and buffed on the wheel.

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  #17  
Old 11-06-2020, 04:33 PM
metalmarks metalmarks is online now
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Looks good! Will you form the wings with compressed air also?
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  #18  
Old 11-06-2020, 05:48 PM
Stretch Stretch is offline
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Quote:
Originally Posted by metalmarks View Post
Looks good! Will you form the wings with compressed air also?
Hi Chris. I did think of trying to form the wings using the same technique, but due to their very gentle and subtle radii, I figured the best way would be to wheel them up. This would give me a far greater control of the shape. Cheers
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  #19  
Old 11-07-2020, 03:02 AM
Stretch Stretch is offline
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Chris... Hereís a quick video of the upper wing section being wheeled up:

https://youtu.be/-CAskeP8448
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  #20  
Old 11-07-2020, 03:16 AM
Stretch Stretch is offline
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Work on the wings started with measuring the model and taking the data necessary to create the form. The outline of the elliptical wing really is what gives the Spit itís distinctive look. For that reason I choose to keep the outline exactly as the original. I played slightly with wingís double curvature, ever cautious of the need for a curvature in both planes as this would give rigidity and strength to the structure. This is particularly important to fend off warpage from welding. The original Spitís lower wing is very flat, so I added a little more rocker to be on the safe side.

In this Shot you will see two theoretical center lines drawn onto a wing half pattern. One line is for plotting data points for drawing the outline of the wing; the other is for a mounting pole structure, around which the Spit will rotate with kinetic energy from wind.

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