BALDER, Vlaardingen Herring Lugger from 1912, scratch build scale 1:50 Plate-On-Frame

RDN1954 said:
That last observation is a creepy one; the highlighting of almost all frames is indicative of a deviation of sorts.
Does Fusion have a function to analyse surfaces, like curvature tangency, curvature radii and curvature angles? Or a function to graphically show the quality of your surface, using colors? Did you use the same number of points on every frame position and are all points located on a frame datum?
It might be an imaginative issue, since you are using your frames to define your skin. When the frames are within acceptable tolerance, you might be able to easily install the skins, but that's only true when the transition between the frames is smooth, without bumps and dents.
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I suppose that for all your analyse questions there is possible a yes in Fushion. But that wil come in my self study lessons 123.4a till 136.7b ….. ROTF I am now at lesson 45.7f ……. or is it 7.8x ……:rolleyes: They call it ‘trial and error’
Every frame has his own drawing plate. So you draw each frame in 2D, in the direction of width (X) and height (Z). On the drawing plate that is positioned on its specific place in the length, the Y direction. So the frame can’t ‘wobble’ and stays flat.
I am now adjusting the outside of the frames in terms of 0,05 mm. So the tolerance is very acceptable.
Regards, Peter
 
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AlessandroROMA said:
Ciao Joahn e ciao Peter.
Bravissimo Peter; Anch'io sono curioso di sapere il motivo di questa procedura. Mi ricollego alla domanda di Johan.
Io, ad esempio, ho dovuto creare più parti differenti della superficie dello scafo e poi unirle, perchè non riuscivo (nonostante nuemrosi tenativi a creare un'unica superficie dello scafo ni un'unica soluzione).
A questo punto mi sorge un altro quesito: Il tuo è già un volume o una superficie?

Well done Peter; I too am curious to know the reason for this procedure
I go back to Johan's question.For example, I had to create several different parts of the hull surface and then join them, because I couldn't (despite numerous attempts to create a single hull surface or a single solution).At this point another question arises: Is yours already a volume or a surface?
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Hi Allessandro.
I'll first explain how I draw each frame. I'll show it, because I think that every programma has is own specific name for functions and objects:
0078 Fushion-1.jpg
I have specified 54 drawing panels (construction plane's) for all 54 frames on the longitudional Y axis. In accordance with their location that can be seen on the scanned line plan drawing.
First I make a 'Sketch' on a plane in 2D (just on the X and Z axis), in this case plane 52, and I draw the curved line (with the function see start of arrow 1st) between points A to J. Depending on where you place the points curved next to each other, the function itself draws a line with a certain curvature. You can adjust the curvature by moving the points (later). In my case I drew this curved line through the 'frame-52-points on the 7 water lines and 6 verticals.
Secondly, I draw with straight lines (with the function see beginning arrow 2nd) that start at point J. I can then make a straight 90 dgr angle at point K by first 'hovering' over point A, after which I am offered 2 auxiliary lines to draw the line. First secure at point K and then connect to A. By connecting these 3 lines, a 'profile' is created. Fusion then creates a color within the shape. If there is no coherent whole, then there is no color and you have to look for where no 'contact' has been made.

Now how I put together the 'loft':
0078 Fushion-2.jpg
After activating the "Create"+"Loft" function, I first choose the frame where I will start composing. In this case I click on the leftmost frame 27.
The sketch (see start arrow 1st) that I have made in Construction Plane-27 is then highlighted, the frame itself also lights up and the left 'Loft' frame becomes visible that I have 'Connected' Profile 1.
I then click on frame 28 (see arrow 2nd) and that also appears as 'connected' in the Loft frame.
Fushion then displays a box indicating "Select loft input" until you click "OK".
For the photo I then used the mouse to only point to the 3rd frame (see arrow 3th), causing the sketch with its 3 lines to light up.
The loft function creates a skin over the outer lines of the selected frames. Because the skin ends in a point at the end, you get a closed whole.
AlessandroROMA said:
At this point another question arises: Is yours already a volume or a surface?
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I suppose it is a surface. Because, as I showed in a early post, you can create a bump or hollow by shifting a draw point.
Hopefully it is understandable.
Regards, Peter
 
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AlessandroROMA said:
I had to create several different parts of the hull surface and then join them, because I couldn't (despite numerous attempts to create a single hull surface or a single solution).
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In itself not a problem to join different surfaces, but you need to check for gaps, tangency and continuity. For a hull one doesn't need a volume, only one half of the hull is sufficient; it can be mirrored around BL0.
And like I said before, what both you and Peter are trying to achieve is at minimums the job of a high pay grade professional. Thumbsup
 
Peter Voogt said:
Thanks, Tobias. It’s just making a model, only digital. And here also a lot of re-do’s …….. ;)
Regard, Peter
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Re-do's are an unavoidable part of our hobby. As @Uwek Uwe mentioned in another post we (modelers) are Perfectionists! I respect any modeler who isn't afraid to re-do. While 'Trial and Error' is not the optimal way to learn, I am confident you can grasp the required skills.
 
You and Uwe are right, Jim. And the problem with working on the PC, you can zoom in to details which are far more detailed than macro pictures. You have to find here also your limits or what is necessary.
Jimsky said:
While 'Trial and Error' is not the optimal way to learn, I am confident you can grasp the required skills.
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The digital advantage of this re-do’s is the digital dust-bin. No lost of expensive wood. Just lost of time ………;)
Regards, Peter
 
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After the necessary hours of input, I now have all 54 halve frame shapes complete:
0080 Whole Points.jpg
Here still with all drawing points visible.
The front and back do not have the correct shape because I cannot yet achieve that when creating the loft.

The one without points and with a color:
0081 Color.jpg
The hull shape has become beautifully flowing, but that took a lot of adjustments.
This is the hull to deck height. The bulwark is placed on top with loose supports.
But I can make it visible:
0082 Verschansing.jpg
Then I can now mirror all the half frames and merge them into whole ones.
Then there may be the question, could you not work with entire frames at the same time? I have no idea if I could adjust the shape both left and right simultaneously.
Regards, Peter
 
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Peter Voogt said:
After the necessary hours of input, I now have all 54 halve frame shapes complete:
View attachment 401198
Here still with all drawing points visible.
The front and back do not have the correct shape because I cannot yet achieve that when creating the loft.

The one without points and with a color:
View attachment 401199
The hull shape has become beautifully flowing, but that took a lot of adjustments.
This is the hull to deck height. The bulwark is placed on top with loose supports.
But I can make it visible:
View attachment 401202
Then I can now mirror all the half frames and merge them into whole ones.
Then there may be the question, could you not work with entire frames at the same time? I have no idea if I could adjust the shape both left and right simultaneously.
Regards, Peter
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At first glance this surface looks pretty good and what's more, very usable for further definitions.
 
Peter Voogt said:
Thanks, Johan.
Just for the completeness: the loft is purely to control the shape and 'flow' of the frames.
Regards, Peter
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Yep, surface no good; frames no good. Frames no good; skins no good either...
Will you be generating some check curves, like on the top railing and deck level?
 
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RDN1954 said:
Yep, surface no good; frames no good. Frames no good; skins no good either...
Will you be generating some check curves, like on the top railing and deck level?
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Hi Johan.
No additional check curves. When adjusting the half frames, I constantly checked the connection to the deck line. That is a 3D line and it was constantly switching between the view from above and from the side. Then I immediately checked the course of that curve while zooming in. Also constantly with the to projected line-plan pictures.
There may well be additional control functions in Fusion, but for now I'll stick to the Loft.
When assembling the entire frames I will also try to add the line of the deck round. I can find the curve on the old drawing of the main frame. I hope to project this onto the comparable frame and then copy it to the other frames. But I think that will also requires some 'finding out'.
The top railing will be constructed on the model. With a mold to check the curves.
Regard, Peter
 
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