G
gerard1938
Guest
Taking the liberty to intrude in your community of realistic shiny models I'll try to 'sell' an old-fashioned but very cheap modelling type, the cardboard model.
Very accidentaly I met with Fenlander's group-chat message on the net and switched my intention building a Spit to the FW190 being the group-build subject as per 1st of April.
I'm not very certain to be able to get the 1:50 bird ready within 3 moths, but we'll give it a try. 90% of the drawing work is done and in this thread I will try to show a bit readable sequence:
View attachment 14556 STEP 1: A 3d-view of the model can be found on the I-net and inserted into an empty AutoCad drawing. I have the opportunity to use this software but one can use any drawing-pack (preferrably vectorized) as long as the measurements are clearly and accurately presented.
View attachment 14557STEP 2: Browse the net on the measurements of the type you intend to build.
View attachment 14559 STEP 3: Measure the sizes of the inserted picture
View attachment 14558 STEP 4: Calculate the percentages and the deviations(!) from reality/drawing. If there is an error in comparing length/span/height then you'll have to reconsider your computation, the sketch or your measured values. The height of a plane is very often an arbitrary factor !
View attachment 14560 STEP 5: Decide the scale (your mm : real mm) you want to build, scale the inserted picture to the size of your model and check the measurements of length, span and height.
View attachment 14561STEP 6: Copy (draw) the picture in a new layer, add centerlines and check wether the model is positioned rectangularly to the grid of the drawing you're working on. If not you'll have to rotate the copied figure adequately.
View attachment 14562STEP 7: Look for straight elements in the model's fuselage and cut it into as few as possible cylindric or cone elements. I used a FW190 type D as a basis since this was a picture with the fuselage-sections in it that you have to fiddle out by yourself from top and side view only. (I shifted a copy of my FW190 A over the new inserted type D picture).
View attachment 14564STEP 8: Adapting the 'D-sections' to my A-type by slightly resizing the heights and widths of it.
View attachment 14565STEP 9: Is the most difficult step in the entire drawing procedure. The construction of the (mathematical) development of the sections. There are many ways to achieve this result and in fact it is a seperate chapter. I finally wrote an Excel-programme based on the (dxf) co-ordinates from the drawing.
View attachment 14568STEP 10: In order to make 'gluable' sections of the ribs they are copied to a seperate part of the drawing.
View attachment 14569 STEP 11: Each rib is reduced slightly in order to fit it inside the fuselage elements. Taking in account the paper's thickness of 0.2mm.
View attachment 14570STEP 11a: Offsetting the original shape and deleting it.
View attachment 14571STEPS 12: All ribs are provided with 'slabs' that are to be glued inside both ends of the fuselage elements.
And since I am out of screendumps this is for the time being the temporary end of the story. To be continued...
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Very accidentaly I met with Fenlander's group-chat message on the net and switched my intention building a Spit to the FW190 being the group-build subject as per 1st of April.
I'm not very certain to be able to get the 1:50 bird ready within 3 moths, but we'll give it a try. 90% of the drawing work is done and in this thread I will try to show a bit readable sequence:
View attachment 14556 STEP 1: A 3d-view of the model can be found on the I-net and inserted into an empty AutoCad drawing. I have the opportunity to use this software but one can use any drawing-pack (preferrably vectorized) as long as the measurements are clearly and accurately presented.
View attachment 14557STEP 2: Browse the net on the measurements of the type you intend to build.
View attachment 14559 STEP 3: Measure the sizes of the inserted picture
View attachment 14558 STEP 4: Calculate the percentages and the deviations(!) from reality/drawing. If there is an error in comparing length/span/height then you'll have to reconsider your computation, the sketch or your measured values. The height of a plane is very often an arbitrary factor !
View attachment 14560 STEP 5: Decide the scale (your mm : real mm) you want to build, scale the inserted picture to the size of your model and check the measurements of length, span and height.
View attachment 14561STEP 6: Copy (draw) the picture in a new layer, add centerlines and check wether the model is positioned rectangularly to the grid of the drawing you're working on. If not you'll have to rotate the copied figure adequately.
View attachment 14562STEP 7: Look for straight elements in the model's fuselage and cut it into as few as possible cylindric or cone elements. I used a FW190 type D as a basis since this was a picture with the fuselage-sections in it that you have to fiddle out by yourself from top and side view only. (I shifted a copy of my FW190 A over the new inserted type D picture).
View attachment 14564STEP 8: Adapting the 'D-sections' to my A-type by slightly resizing the heights and widths of it.
View attachment 14565STEP 9: Is the most difficult step in the entire drawing procedure. The construction of the (mathematical) development of the sections. There are many ways to achieve this result and in fact it is a seperate chapter. I finally wrote an Excel-programme based on the (dxf) co-ordinates from the drawing.
View attachment 14568STEP 10: In order to make 'gluable' sections of the ribs they are copied to a seperate part of the drawing.
View attachment 14569 STEP 11: Each rib is reduced slightly in order to fit it inside the fuselage elements. Taking in account the paper's thickness of 0.2mm.
View attachment 14570STEP 11a: Offsetting the original shape and deleting it.
View attachment 14571STEPS 12: All ribs are provided with 'slabs' that are to be glued inside both ends of the fuselage elements.
And since I am out of screendumps this is for the time being the temporary end of the story. To be continued...
View attachment 23039
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View attachment 23041
View attachment 23042
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