This is a model I made to allow adding a seperate bin inside of my Wickes kitchen single bin (https://www.wickes.co.uk/Wickes-Full-Height-Bin-for-300mm-Base-Unit/p/158535).

It takes up roughly a 3rd of the compartment and allows recycling and food waste/non-recyclables to be in the same bin.

The Bag Holder is held in place via friction and allows a bin bag to wrap over it, and has a right way up (look for the slight bevel).

The lid is an optional additional print to prevent smells from escaping and just sits on top.

Be careful with the tabs on the sides that sit over the edge of the bin as they are quite thin to not interfere with the bin handles enough to stop the door closing.

Printed using:

• Grey Eryone PLA+
• 5 Top Layers
• 2 Wall Loops
• Cubic Infill at 15%
• No supports needed (Even for the Lid)

FreeCAD files attached if any modifications are needed and/or to support a different bin.