Spool Holder with Thread Rod for Sintron Prusa i3

***This is compatible with all frames with 5mmx50mm (top bar of the frame).***

I needed a spool holder to hold the filament in for my Sintron prusa i3, so I decided to get the original one for Prusa i3 mk2, designed by [Josef Prusa](http://josefprusa.cz/ "Josef Prusa"), from [Prusa Research](http://www.prusa3d.com/ "Prusa Research") and modify it to fit the Sintron acrylic frame, by extending the frame mount from 4 to 5cm and adding a 8mm threaded rod to hold the spool and give it more secur