Coffee Roasting: Operation of a DIY drum coffee roaster

This is my coffee roasting process.
I built a drum roaster from a stainless steel utensil bucket and a Wagner heat gun. Most of the parts are from Home Depot, except the drum. The drum is from one of the kitchen themed stores.

It works pretty good, but there is a lot of chaff when the roasting is done. If you have any ideas on how to eliminate the chaff please comment below.

Coffee bean sources:

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