so I've been printing a bigger model on my CR-10 but when it got at a certain point my fillament spool dropped of it's holder resulting in a huge waste of filament. anyhow i made this simple solution. just print it. turn the nut off the holder. put your spool on. then put the stopper on, and turn the nut back on. the spool won't be going anywhere. pictures of mine will follow asap.

Mine was printed with Leapfrog cookie brown Pro PLA at 200C for the hotend and 45C for the bed. happy printing everyone!