Magnetic Thumbs Up!
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A Magnetic Thumbs Up! I utilize it for the dishwasher to indicate whether dishes are clean or dirty, and also as a fridge magnet with numerous other uses. The magnet used is 6mm x 3mm in size and can be found on eBay and various other sites. Two magnet holes are recessed into the underside of the magnet, preventing scratches when fully seated. The top and bottom edges have bevels to facilitate easy removal from surfaces. I employed ColorPrint by Prusa3D to automatically change color layers (almost automatic, anyway!). For more information on this feature, visit http://prusaprinters.org/color-print/.
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