3d programs used to design tanks?

[knukles55]

hey guys sorry if the tittle sounds a little off im trying to find out some of the programs used to map out a tank that some of you use for your tank builds. this is the reason I need it im trying to design a room and map out were my future tank will go as this part of the house isnt built yet.

thanks again for your input.

 

[Watchman86]

Google sketchup is free and pretty easy.

 

[knukles55]

thank you