well.. what are you gonna make it out of? how much of that stuff is in the average planet - whatever that is. now think of a planetary orbit. somewhere in that orbit is a whole planet. how many of those planets would it take just to make a complete circle around a sun? doesn’t take rocket science. if one can imagine such a structure, one should also be able to contemplate the massive amounts of raw material to make it happen.
if you took all of the planets in the solar system and placed them end to end, you’d only get a very few segments of such a ring, even if you ironed them to flatten them out
I try my calculation.
This is for 50,000 meters wide and 100 meters deep ring around the Sun at Earth’s distance.
1.496e+11*2*3.14*50000*100 = 4697440000000000000 m^2
Volume of earth in cubic meters = 1.083×10^21
1.083×10^21 / 4697440000000000000 = ~230
If I didn’t err in my calculations then the material of earth can be used to build 230 such rings.