Mason Jar Hour glass
thingiverse
It's simply a hourglass shaped double ended screw on lids. Fitted for standard mason jars.
Download Model from thingiverse
With this file you will be able to print Mason Jar Hour glass 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 Mason Jar Hour glass.