Here we go, find attached the ready to print 8" circle !
I created the files via spaceclaim, tool we use for modelling for our FEA work.
Created both A3 & A4 size so use whichever is suitable for you. Also, if you are going to print these files make sure you do it without scaling...
I hope we don't soon see a thread for "Need a tooth prick... Something's stuck in my teeth "
still waiting for OP to tell for what purpose he needed it ?