My partner and I like to use washing powder in our machine. In ecologically sensitive Germany the powder comes in thin plastic pouches to reduce waste (good!).
I was looking for an automated way to dose the needed 50 ml of powder and transfer it into the machine without having to handle/touch the corrosive powder and/or messing around with a dosing scoop.
The result is attached.
Can be printed without supports (at least on my I3), orient smaller side and screw in thread housing down.
Refill the washing powder into a DRY standard soda bottle (I use the 1.5 l ones) using a funnel. Connect (screw in) soda bottle to automated doser and close automated doser outlet with the soda bottle cap (screw on). Check that all connections are tight. Hold upside down, wasing powder will flow from the bottle into the doser. Turn right way up to allow excess powder to drain back into bottle. About 50 ml powder will stay in the doser, the amount is defined by the length of the inner angled tube (not visible from the outside). Open bottle cap and pour the dosed 50 ml amount into the washing machine.
CAUTION: washing powder is corrosive and damages skin/eyes/objects/etc... Always handle with great care and check for any powder leaking before using.
I used the bottle_cap and PC1881_Inner_Thread from TERAHURTS and ANDREWGCROSS , many thanks.
printing temperature: 200°C extruder and 60°C bed