A fully 3d printed laundry detergent dispenser. It comes with a 100 ml cup, and you can freely adjust flow and dosage. The capacity is 2.4 L.
The designs comes with a whirl to loosen the powder and crush crumbs to prevent the mechanism from clogging up.
The file of the cup is provided with the spout on the right side, for left-handed people. If you are right-handed, mirror it in the slicer before printing.

While this is primarily designed for laundry detergent, you can use this for anything else that needs dispensing, too.

Instructions
Print all parts
Place the insert onto the bottom
Insert the shaft into the stopper and place the whirl on top. (This is a press fit, if it is too loose, use a bit of glue here)
Place the stopper onto the insert
Add the top (the whirl fits through the hole at the bottom of the top for easier assembly)
Place the lid

Usage
Place the cup
Move the stopper to the left (closed)
Fill up the top with detergent powder
Move the stopper to the right to open and increase flow the further you push
The cup is 100 ml when filled to the brim, refer to your detergent manufacturers packaging, your water hardness and personal preference for optimal dosage. I just eyeball it, it’s fast and convenient.
If you notice decreased flow or a blockage, move the stopper around to crush crumbs and loosen the powder (always with the cup below)
You have to open the lid to check how much powder is left. I did not integrate a transparent slit, because I do not expect that the average user will have transparent filament around.