Coffee Monsta! Eats the used coffee grounds in your spent k-cups! by dbibeau

Last crawled date: 3 years ago

latest post:http://www.thingiverse.com/thing:1831661
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Launched this homebrewed k-cup coffee composting tool the beginning of February 2014 (rev40) after about a year of prototyping and getting feedback from friends, family and offices that are using this device in Vermont!
April 2017 update REV53 heavy office use tested over 5 months daily with low quality moisture ridden PETG filament before it broke except it takes 1.5h to print (with a small computer fan on just when the top 3 legs are printing no supports) .2mm layer thickness, 90% fill helps stitch layers together...
Just printed with transparent PLA with the above settings and it looks like heavy use should be no problem for more than the previous prints 5 months (over 12 cups/day in an office :) )
All you need to use it is a wide mouth mason jar of your choice and just fasten it on the jar where the lid would normally go. After your coffee is done brewing,(and the spent k-cup is cooled down), take the k-cup out and pop it down on the pointed top, give it a half twist one way, then the other, tap a couple times, and the coffee will fall out into the jar and the metal foil will stay on the cup and not in the coffee grounds that can now go in the compost or in the garden! Think of the billions of tons of coffee that could be helping plants grow in the garden! (or a lawn, as with a little rain to help it disperse, it doesn't help the grass or kill it)
As you can see from the gallery pictures, there's a lot of design changes to reach this crazy shape, i would posslbly like to make it commercially, except it will likely add to the plastic waste stream and just know that it will lead to mildew that needs to be washed out of the jar every few days or when it fills up, and/or if you are going to put this shape into a remixed commercial product, it will need a dehydration scheme so the grounds don't sit in the bottom of the jar all wet.
Fresh dried out PLA filament is the way to go for this print to work best, good luck!