Idea for printable chainbelt

So the idea is to tie thin string across the build area and print the teethes or bars across them. a good idea probably is to print a bottom part first and after adding the string print the top half. by printing some relevant fixtures on the table extended lengths can be obtained by advancing the chanin after the print by a given length and continue the print further down the strings.

Has someone tried to do print with object locked inside a pocket like a nut or some thing that is added half way?