Mechanized chain cleaner

A device for long-term washing of a bicycle chain in a bottle with some kind of solvent. First of all, I advise you to familiarize yourself with the original source of the idea.

I use diesel fuel (for safety, as it has a high flash point). Maybe this is an extra precaution.
Don't print all the details at once.

The bottom bottle is any suitable size, but with a 38mm neck.
The top bottle also has a 38mm neck.
Half-square part shield2_wb_D81.stl - for cylindrical bottle 81mm or larger.
Detail half-square shield2.stl - for a bottle of "Frutmotiv" or any other drink with a diameter of about 93mm.

The bottle connector gasket is made from an old "silicone" phone case. This material is highly resistant to solvents. The thickness of the gasket is better up to 2mm.

Parts marked with "ALTER" are optional. This is a tested, working option, but I didn't like it.

JGA25-370 motor, 100 rpm, 6V. Faster may cause the cleaning liquid to burst out.
https://aliexpress.ru/item/329865366