DIY Coffee drum roaster test for gear ratio, drum speed & prep for test with junk beans.

Hellow guys, Welcome to my website, and you are watching DIY Coffee drum roaster test for gear ratio, drum speed & prep for test with junk beans.. and this vIdeo is uploaded by oldgrumpus at 2017-01-14T19:43:09-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.