melitta mill and brew grinder lock paddle by gogodoit

Last crawled date: 2 years, 12 months ago

This is a replacement grinder lock for the Melita Mill and Brew coffee maker. I've had this coffee maker since 2003 (over 14 years), and really like the flavor of coffee it makes. Everyone that tries it says "wow, that's good coffee". However, the built-in grinder body has two locking levers that broke with years of use. You can get spare parts on ebay, but why not print them?!
The basket has two of these locks, so print one, and make sure it works for you before printing a second. To remove the old locks, use a flathead screwdriver to pry the old lock out, being careful not to break the axel nubs that let the part pivot to lock in place.
Update 11/17/2017
The first design could warp if printed with PLA, from the heat of brewing the coffee. I've improved the design, so that the heat from brewing doesn't deform the parts. It's now a two part, and should be printed at 100% infill. The plug fits into the paddle, after being installed in the grinder basket, to keep it from warping.
Instructions
Print the paddle at 100% infill
Print the plug at 100% infill
Clean up the hole to fit the basket's pivots with a drill bit
Mount the paddle in the basket, with the spring in place
Push the plug into the paddle, to lock the two parts in
Brew coffee
Download from Thingiverse, or find the files here:https://github.com/thrasher/melitta_mill_and_brew