Seems like those cylinders are high poly :|
Round doesn't work in BL, but the default tank also isnt a box. It has suggested curves.
When adding a cylinder, on the left side of the screen there should be "vertices", change it to around 8-12.
Is there a fast way on doing this I'm not a pro modeler yet
Y-y-you can model?Nice tank :o
Y-y-you can model?
Main Bodyhttp://gyazo.com/a53ddd67f0e3537c02702a5871818be0Turrethttp://gyazo.com/d87a0e481dcb12cb47dcc12431381559