Refillable Marker

grabcad

This marker is meant to fulfill the need of markers with little ink, running out of ink. I've been in math class and the teacher would send us to the board and once i got up there I'd find out that the marker would be entirely out of ink. This always seemed to be a problem in that class and eventually I was fed up. Most refillable markers I've seen have been either complicated to refill or required you to go to a store to refill, but i see it as the consumer should be able to refill the marker themselves.NOTE:The tip of the marker is a placeholder and an actual tip is made of paper and sand. Also note that dimensions are NOT to scale