Modular Grocery List Refrigerator Magnet

Inspiration

This is my submission for the April 2025 fridge-themed printables design contest. The contest was my main motive for making this.

I used to keep a magnetic whiteboard on my fridge to track needed groceries. But I found I was always writing the same basic items down anyway: eggs, orange juice, bread, gummy bears, etc. I still have that whiteboard for obscure items, but the common items are now tracked by these print-in-place refrigerator sliders.

Printing Instructions

A collection of .stl files for the most common grocery ingredients are included in the download section. If you want to print something else, then see the ‘customizing’ section below.

This should be a very easy print. I had no trouble printing without supports on my Prusa Core One. The only ‘gotcha’ is to add a color change on the layer right before the text starts printing. This makes the text much easier to read. No MMU required! Most slicers have a feature to pause for manual filament change at a certain layer. For prusa slicer, right click the slider at the appropriate layer and select ‘Add Color Change’

Assembly Instructions

Each slider uses two 6x3 magnets. They slide into the holes on the back.

Notice there's a little notch in the corner of the print. This makes horizontal alignment easier when stacking multiple together on the refrigerator.

Customizing Instructions

No CAD necessary! Making your own shopping tracker magnets can all be done within prusa slicer. But source files are included in case you really want to open CAD.

To make a custom tag, open fridge_list_placeholder.3mf in normal or expert mode. Then edit the text object in the right panel

This should popup an edit menu. Change “Blank” to whatever you want on the magnet

And continue slicing and printing as you normally would.

Advanced Usage

I know what you're thinking… and the answer is: yes! these magnets do work well on the Prusa Core One