As the batter bottle nears empty, the "retraction" or sucking action can create little mini-splashes and tiny amounts of batter can be sucked up into the hose. It's only small particles; but, if not cleaned out they can dry and over time build up. I am not sure that a pipe cleaner can immediately be used to clean the tube or if it will simply push the tiny batter spots deeper. So, I'll pick up some pipe cleaners with which to test.
A baffle, inserted into the top of the bottle should prevent this from happenin by catching the splashes and preventing them from reaching the hose outlet.
It is important to note that it does NOT take tipping the bottle to see some residual batter in the hose.
The PancakeBot is the world’s first food printer capable of printing pancakes by automatically dispensing batter directly onto a griddle in any shape of the user’s choosing. Pancake designs can be loaded onto the PancakeBot via USB or SD card. Representing an evolution in food-printing technology, PancakeBot lets kids and adults express their creativity through food while exploring technology.