Discussion in 'Gallery & Designs' started by Joseph, Jan 5, 2005.
Oh well, don't laugh
Maybe I'll manage to make a paper model out of it :?
What u actually built was cleaner and more precise than my first rhino model (the Terra Firma). I wondered how i was able to build the plane considering the meshes, lines everything was a mess even during the final editing in AutoCAD. hehehe.
I am wondering why I am unable to unroll most of the 'hull' surfaces. They look quite simple but Rhino refuses to unroll them. Any hint?
I think u must spilt hull into 3-4 pieces to make it can unroll for each piece. u can not unroll whole hull into 1 peice of paper because that hull is not in regular shape like cylindral or cone.
i have some picture to show how to unroll surface like your space ship.
First i draw a curve to make like cross section, i draw only 1 side becasue i can mirror it. that curve is a guildline for loft
Second i loft each pair of crossection with "straight section" and rebuild with 20 control point.
Third i unroll each section of hull with unrollsrf and mirror unroll job...that's all. easy but it work for me and my model
thanks a lot for the advice, I will re-do the model. (even the exploded simple sections of the hull won't unroll)
I used the 2 rails surface to make the hull, and the model is not perfectly mirrored (I manually built each side :roll: ). Maybe it's the reason...
No need to re-do the entire model. Let Rhino "flatten" it out for you.
Take a look at my Rhino Unwraping Tutorial from a few weeks ago.
The secret to creating "unwrapable" surfaces is the "degree" of the surfaces.
Each surface has two "Directions" (the surface itself defines the third dimension in this co-ordinate system).
In order to unwrap a surface, one of these ditections (known as U and V) must have a degree of 1. That is to say no curve.
In Rhino, you can change the degree of any surface. The techniques are spelled out in my tutorial.
Hi Joseph.. been looking at ur model. maybe, some lines are a bit too curvy to flatten.
Thank you all for the advices
I've redone the surfaces using the 'loft' command instead of the 'Sweep 2 rails', and now the surfaces unroll without problem :lol:
Another stupid question: when I unroll, I need only the edges of the surfaces (where one has to bend the paper). How do I suppress the wireframe from the surfaces?
I import the wireframe into Corel Draw, then delete all the unnecessary lines.
Does anyone have a better method?
to eliminate the wireframe, select the surface, then select CURVE -> "From Object" -> "Duplicate Border". Then delete the surface.
Thanks a lot! Now i 'just' have to unroll everything, color the kit, test build, ....
Joseph : That's real cool project. cant wait to see your finish project
about create unfold job, i have my technics what will be useful to everybody.
First : unrollsrf your part, u will get a plane part in Top portview
Second : select unroll part u want and then use function Dimension -> Make 2 view drawing.
Thirds : unroll job what not have wireframe line wait for u at Make 2D Visible line layer
Atomsk : your technics about increase or decrease degree of UV is very useful for us...thank you very much
What a great group! I would never have found all these answers alone.
So I have another question: is it possible (and necessary) to take into account the strength of the cardboard? the internal formers should be a little smaller than the cutting plane, no?
im not sure i understand your question or not but i think u mean an internal former what use to form and make your part strength. if u mean internal former, i have some technics to u to easily make an internal former for your part.
First : start with a part u want to make internal former.
Second : choose menu "Curve" > "Offset Curve" and type "D" in command box, press enter. type "0.5" in command box again (make sure that your environment is count in millimetre) that 0.5 mean 0.5 mm. or thickness of your cardboard then press enter. next is click at curve u want to make internal former and press enter.
Third : u will got a curve for your internal former but it not finish yet. continue in next post
continue with make an internal former...
when u get a curve what u make from last post...now just make surface into by
first : select curve from last post u did then choose menu "Surface" > "Planar Curve"
Second : got it...easy?
I have been looking for answers to a question and stumbled onto this thread. I think in the distant past someone told me that you should just use the surface as it comes out of Rhino into Corel Draw instead of duplicating the border and exporting that into Corel Draw. I was fiddling with that method and couldn't get anything to work. I've used the duplicate border method while working with my corsair but in trying to determine which way would be best to send airwolf parts to modelincard I have only caused myself frustration.
duplicated border in Rhino, Export that curve into .ai format (illustrator) then import that .ai format into coreldraw and color it...after that use coreldraw to crete .PDF for you,. that's all :smile:
Thanks Nobi. I kind of thought that was the way it was done.
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