Google sketchup

Google sketchup (from wikipedia)SketchUp (formerly Google Sketchup) is a 3D modeling computer program for a wide range of drawing applications such as architectural, interior design, landscape.I make drawing of all parts of my project on single screen to understand how looks my part when it is converted in 3d. How I use google sketchup
step 1.firstly I install this open source software.
step 2.I draw incinirator,stick,solar panel,connector of solar panel and incinirator,moisture seperation box I cannot draw these design separatly i make all parts on single page.in this system i use the extrude command but these all are having the random dimention i am using this tootls to just know how it work it is good to school student to learn 3d design

conclusion

Firstly it is very easy to download because it is open source software.If any one is new in 3d design then he/she must try this software firstly it more helps to new people to understand what is ecxact 3d design.I like this software.In future I always first cheak the view of my design in this software.