Apr. 9, 2019
Once in a while Sweet Maria’s customer Larry Cotton blows our minds by sending us photos or a video of a new homemade A machine for roasting coffee. Or the person operating it! The basic requirements for a coffee roaster are a heating element that gets suitably hot and a mechanism... ...more creation made from basic parts and not-so-basic engineering. Here’s his latest.
About 1.5 cups of Green coffee refers to the processed seed of the coffee tree fruit. Coffee is a flowering shrub that produces fruit. The seeds of the fruit are processed, roasted,... ...more is loaded into a modified flour sifter by an auger system fed by a hopper. Larry had replaced the wire stirrers in the sifter with paddles in order to give the beans better agitation. The heat source is a vertically mounted Harbor Freight heat gun (about $9) pointed up through the bottom of the sifter. The mechanism that moves the roasted coffee to the cooling tray is built with a rack and pinion taken from a camera tripod. As the batch is cooling, the next batch can start the roast process. Each batch takes about 10-15 minutes. Oh, and the music…Larry made that too.
Here’s the video.
Questions? Contact the maker himself at [email protected]