Try these restaurant supply stores in David:
https://www.google.com/search?q=restaurant supply store in david%2Cpanama&oq=restaurant+supply+store+in+david%2Cpanama&aqs=chrome..69i57.16031j0j8&sourceid=chrome&ie=UTF-8&npsic=0&rflfq=1&rlha=0&rllag=8439509,-82423601,267&tbm=lcl&rldimm=2169712308481050592&ved=2ahUKEwi86ai6w9bdAhWO16QKHU4nCr4QvS4wAHoECAMQKA&rldoc=1&tbs=lrf:!2m1!1e2!2m1!1e3!2m1!1e16!3sIAE,lf:1,lf_ui:10#rlfi=hd:;si:2169712308481050592;mv:!3m8!1m3!1d1207.6262734897484!2d-82.42399337605741!3d8.438392824402445!3m2!1i308!2i470!4f13.1
Or this substitute:
https://www.theprairiehomestead.com/2011/04/a-frugal-cheesecloth-alternative.html
until