Models
Junction 3D Printable Models. Makeshape.co have 3 Junction 3D Printable Models.
Electric duct junction reducer ICTA (3/4″ to 1/2″) 20mm to 16mm
Thingiverse
Neopicture
Free
Electric Junction box fot 16mm or 7mm sleeving.
Makerworld
Jean-marie Astruc|Works
Free
Hot Wheels Track To Floor Ramp Adapter
Myminifactory
Mike S
$4