This update on Larry’s Wobble Disk Home Coffee Roaster now has a shorter heating element, two options for handling and more design improvements

We are big fans of doing it yourself, and in the case of home roasting, that sometimes means building your own machine or modifying a low-cost option to roast coffee and make it work. Customer and home roasting comrade Larry Cotton has been a fervent example of this DIY spirit, consistently reworking what he calls the “wobble disk” coffee roasterA 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. It’s a unique design that effectively moves coffee and roasts it evenly.
Check out the latest iteration of the wobble disk roaster below, which now features a stripped down heat gun for a shorter heating element, two ways to configure the handle — affixed to the sifter or to the whole roaster, and some design updates.

Larry has previously shared a PDF with instructions on how to build your own wobble disk roaster. Check out Build Your Own Home Coffee Roaster from 2024 for more information.