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Looking for some advice on witch way up to print these parts.

Using DesignSparks Mechanical and Simplify3D

I would like to print without supports if possible and wanting to know which way to print the parts.

I have included the parts. What do you recommend?
Bottom Long Left.stl (137 KB)
Bottom Long Left2.stl (137 KB)
Bottom Long Left3.stl (137 KB)
Bottom Long Right.stl (198 KB)
Bottom Long Right2.stl (198 KB)
Bottom Long Right3.stl (198 KB)
Bottom Long.stl (126 KB)
Bottom Long2.stl (126 KB)
Bottom Long3.stl (126 KB)
Carrage.stl (501 KB)
Carrage2.stl (501 KB)
Carrage3.stl (501 KB)
Top Right.stl (193 KB)
Top Right2.stl (193 KB)
Top.stl (131 KB)
Top2.stl (131 KB)
Top3.stl (131 KB)