Free 3D Structure Design Sim for Balsa Wood Modeling

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A user is seeking a free 3D design program for modeling balsa wood structures to test designs before construction. They have experience with a 2D program for bridge designs but are looking for a 3D alternative. Another participant suggests that a 2D program might suffice for certain planar models, while more complex structures like space frames may require 3D software. They mention that trial versions of 3D structural design software, such as RISA 3D, are available but often come with limitations. The discussion highlights the need for accessible design tools for hobbyists in model building.
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I am building a little balsa wood model. I was hoping there was a program to help me test designs before I spend hours gluing sticks together.

I've used a 2d program for testing bridge designs, but I've never seen a 3d version. I'm hoping this question is cake walk for you guys.

Also, I prefer free :)

-Gits
 
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You might be able to use the 2d anyway depending on what your structure is, and what the program your using allows. If you model is planar and those planes are orthogonal, there isn't really interaction in theory anyway... but if you're making a space frame or truss, then its probably got more complex things going on.

There are trial versions of some nice 3d structural design software, I know RISA 3d has a 30 day trial. I'm sure there are others, course they often have limits.
 
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