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Our dog (Elbe, Black Lab puppy) and cat (Lola, Calico) have reached an agreement, it seems - and that agreement is not to tell members of the family that they have already been fed. I'm not sure where we went wrong, but they really should be telling us "No, we actually ate early this morning. Please don't feed us again."

To help combat this, I used this as a project to teach myself Fusion360. (I've found completing a real project is the best way to learn a new tool.) After following the online tutorials, I was able to design and print this in under 2 hrs.

Now, when one of us feeds the pets, we place this sign on the cabinet handle to the pet-food. This way, we are sure. So far, both Elbe and Lola have been unable to reach up and remove this from the handle.

Print instructions

Included gCode has a filament change embedded @ layer 21 (+3mm)

Start with layers 1-20 as Red.
21+ White.