Cage is almost complete in cad. Should all four pieces be seperate files or one file?

Left_right_side_cage.dwg

Just want to know if I can improve this image before I send it to some sheet metal shop for bidding? also, should I create a seperate BOM? never done one before. I think a BOM shows a list of all the parts cut to length?

You've posted this before haven't you? It looks very familiar. Didn't JD Mather suggest some changes? Did you make those changes?

Were you going to print from model space? I find the density of the hatching in your drawing to be too dense for my tastes. There is at least one dimension which someone may have trouble reading since the hatch pattern goes right through it.

Each drawing that you have boxed out in model space should be a separate layout in my opinion.

and some text is pretty small

I was reading that to transfer one of the drawings into a new paper space, I could scale it correctly and not alter the physical dimentions in model space. But when I place the copied drawing into paper space, its scaled almost 4-8 times larger and cannot move the window to highlight all of the object and scale it down to fit in paper space. What am I doing wrong?

No one said to "transfer" the model space drawing to paper space.

The cardinal rule of AutoCAD is to draw all your objects in model space at FULL size, switch to a Layout, create a viewport (or viewports), assign a scale. set up the required view then lock the display.

Text and dimensions can either go in model space or in your layout.

If you choose to put them in model space use annotative scaling. If you choose to put them in your Layout then use whatever normal sizes that you would like the finished product to have. Example: 1/8th" high text and dimensions with 3/16th" arrowheads.

When everything is completed plot from your Layout at a scale of 1:1 and let AutoCAD handle the scaling of everything that appears in a viewport.

BTW...create a separate layer for your viewports and set it not to print.