... Well, not necessarily
So, I started my pack obviously. I actually built two frames, before settling on a third (below). I wanted something seamless, and so I built the one shown below. I riveted all the corners together for added strength, I also used a Bondo-like material to fill in all the cracks on my pipe fittings. I'm considering a plastic coating over the entire frame as well.
Frame #3
Just a bit more work to do here
I went with the Rustoleum Satin Slate Blue
Sanded, drilled, primed and painted
Aluminum bars for attaching the seed trays to my frame
top bottle
Stinger in progress ... I might swap the cone out for a more accurate part.