Hourglass Time Jars

This diabolo twist-off is created for 62mm jars. 

You can simply remix, or create your own version of this hourglass. 

This is a first version, made to be tuned to fit other jars and other designs. 

With this design, depending on the quantity and granulometry of sand, it can take up to ½ hour. 

Print it, take some fine sand, salt or sugar, and then you can calibrate, make graduations for any purpose of your choice. 

note : this fitting is made only to work with 62mm jars, with 4 filets. Adjustments may be needed.