Through Shelf Filament guide
thingiverse
Simply install a plug or guide for the filament if you prefer to have your spool sitting above the printer, with the feed running down through a shelf positioned just above it. The plug or guide is designed to fit 5/8ths and 1/2 inch diameter filaments, but will work seamlessly with most materials up to 3/4" thick. However, you shouldn't encounter any issues even with slightly thicker shelf material ranging from 1/2 to 1 1/4 inches in thickness.
Download Model from thingiverse
With this file you will be able to print Through Shelf Filament guide with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Through Shelf Filament guide.