aaaah new difficulties :)

All depend in what material are the links!
If it's rope it's not necessary to have your forms :)
And my method works

if not my method don't works :)
Some infos are necessary :)

PS My method above works also just don't replace at the beginning the Plexiglass by a plan but keep it :)
Of course holes wille be as the Boolean Diff will give the result so maybe little complex holes :)