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I just bought my first batch of green beans

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  • #16
    Lots of CS'rs roast in a stainless dog bowl with a heatgun and a wooden spoon to stir... so it can be done in an open style roaster ok.

    I love the setup of this, electric can opener motor is clever, nice low gearing and as long as not too much heat is transfered through the drive shaft it should be fine.

    Word of advice... don't try too many beans first few times, while you might be able to hold a kilo in there the limiting factor will be how much heat a 10amp heatgun can produce and if I had to guess I would say 500-600g would be about the limit. If you load it up too much the roasts will be too long or too motley.

    Plan "b" might be to try a camp stove on low flame under it, that would keep the basket warm and the heat gun will have more control over the roasting.

    Look forward to seeing how this one goes though.

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    • #17
      Very impressed. Looks the cat's whiskers, ratty. Best of ...

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      • #18
        Originally posted by Andy View Post
        Lots of CS'rs roast in a stainless dog bowl with a heatgun and a wooden spoon to stir... so it can be done in an open style roaster ok.

        I love the setup of this, electric can opener motor is clever, nice low gearing and as long as not too much heat is transfered through the drive shaft it should be fine.

        Word of advice... don't try too many beans first few times, while you might be able to hold a kilo in there the limiting factor will be how much heat a 10amp heatgun can produce and if I had to guess I would say 500-600g would be about the limit. If you load it up too much the roasts will be too long or too motley.

        Plan "b" might be to try a camp stove on low flame under it, that would keep the basket warm and the heat gun will have more control over the roasting.

        Look forward to seeing how this one goes though.
        Thanks for the advice Andy. Ill try 400gms first up, see how it goes. Cant wait to give it a go.

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        • #19
          Originally posted by rat_tat View Post
          Thanks for the advice Andy. Ill try 400gms first up, see how it goes. Cant wait to give it a go.
          When are you planning the maiden voyage RT?

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          • #20
            Originally posted by Yelta View Post
            When are you planning the maiden voyage RT?
            We set sail at 10am tomorrow morning. fingers crossed

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            • #21
              Click image for larger version

Name:	smaller first roast.jpg
Views:	1
Size:	242.3 KB
ID:	733300Mission successful!
              Although first crack was 16:40 . probably because i had the heat gun on low for the fisrt 5 mins and about 120mm away forom beans. I couldnt help my self and tried 500gms. maybe too much. second crack was at 20 mins. The roast turned out very even and slightly shiny. I was impressed with my first effort.

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              • #22
                Nice! Well done.
                Sometimes shiny beans may mean you've gone into rolling 2C, which is at the darker end of the scale. Bit hard to tell from the pic how dark they actually are.
                A lot of roasters dump the instant the first pop of 2C is heard or just before (where a temp probe helps in which case the beans will look quite 'dry' on the outside for at least a few days. But I wouldn't worry too much about the 20min roast - most of mine in a corretto are about 18mins, and roasters like the Behmor seem to aim for about 20mins for 500g.
                What's more important - how does it taste!
                Matt

                And you have a proof of concept!

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                • #23
                  Thanks Matt
                  Yeah it works better than i thought. I glad 20 min isnt too bad. Ill set the heat gun on full from the begining next time and dump as soon as i hear 2nd crack. I waited about 1 min into 2nd before i dumped.
                  Ill see how it tastes 3 days time. patience patience patience hehe

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                  • #24
                    I'd still think about leaving some type of pre-warm for the first few mins (even if it is full power, but move the gun out 5cm or so), just to dry out the beans. If you go flat out right from the start you can get faults like divots/craters occurring.
                    So a gentle warm is quite good form!

                    But yes - also try pulling the beans back in degrees (30sec into 2C, right on 2C, just before 2C) and see what works the best in the cup for you. This is how we've all learnt!

                    But you should be pretty happy with that for a first batch - to get to 2C with that amount in that ball park time is quite an achievement!

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                    • #25
                      Originally posted by rat_tat View Post
                      Mission successful!
                      Although first crack was 16:40 . probably because i had the heat gun on low for the fisrt 5 mins and about 120mm away forom beans. I couldnt help my self and tried 500gms. maybe too much. second crack was at 20 mins. The roast turned out very even and slightly shiny. I was impressed with my first effort.
                      Well done Ratty, a pretty good first effort, looks like your well and truly on the right track.

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                      • #26
                        Originally posted by Yelta View Post
                        Well done Ratty, a pretty good first effort, looks like your well and truly on the right track.
                        Thanks Yelta

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                        • #27
                          Originally posted by DesigningByCoffee View Post
                          I'd still think about leaving some type of pre-warm for the first few mins (even if it is full power, but move the gun out 5cm or so), just to dry out the beans. If you go flat out right from the start you can get faults like divots/craters occurring.
                          So a gentle warm is quite good form!




                          But yes - also try pulling the beans back in degrees (30sec into 2C, right on 2C, just before 2C) and see what works the best in the cup for you. This is how we've all learnt!

                          But you should be pretty happy with that for a first batch - to get to 2C with that amount in that ball park time is quite an achievement!

                          So how long do i do this 'pre warm' ? then move gun closer
                          ....................

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                          • #28
                            I reckon (IMHO) about 3mins is a good time :-)
                            Matt

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                            • #29
                              Wow! CS = always impressive!!

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                              • #30
                                Originally posted by DesigningByCoffee View Post
                                I reckon (IMHO) about 3mins is a good time :-)
                                Matt
                                Cheers Matt , Ill give it a try

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