The DIY wooden fillable hourglass is a kind of hourglass that you can fill the sand into the hourglass by yourself. With this function, customers can use this sand timer in many areas, like weddings and anniversaries. And some customers also put ashes into it to commemorate their relatives.
The opening of the hourglass is very smooth to prevent hurting fingers when you cover or pull out the stopper. And the material of the stopper can be EVA or cork. The running time can not be as long as our standard sand timers because the fillable hourglasses need a larger hole to prevent the sand from getting stuck. There are some other factors to ensure the hourglass can work after customers have them. As a factory of hourglasses, we need to think these issues through.