ROASTING WITH A HEAT GUN AND BREADMAKER
A heat gun can also be used to roast coffee. Either stir the beans in a colander while heating them (heat gun / dogbowl), or use a breadmaker (heat gun / breadmaker). For the breadmaker approach - we suggest you use a second hand one that is ok to "break".
To use the breadmaker approach, put your beans into the breadmaker and set to the "dough" setting. The objective is the keep the beans moving rather than using the breadmaker to apply any heat.
Next, turn on your heat gun and hold above the beans while they are agitating Then, just watch them roast.
The time to roast depends on your heat gun, the amount of beans you put in (we have successfully roasted around 400g at a time using this method) and how close you hold the gun.
This is a messy (definitely outside!) method, but very effective. The only problem you might strike is the breadmaker stopping. Just turn it off and turn it on again.
There are lots of ways to monitor, adjust and improve this method. The video we have loaded just shows the very basics.
Disclaimer: bread maker machines and heat guns are not designed to roast coffee.