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Thread: My hand built coffee roaster ( lots of photos )

  1. #1
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    My hand built coffee roaster ( lots of photos )

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi all I'm new to your cool site and to the wonderful world of coffee roasting , to this end I have built my own coffee roaster , this was a big project in both time & money but I don't do things buy halves and i think the look of the unit alone was worth it . any way I have yet to roast a batch yet
    (mon is D day) I would love any info re roasting for a newbie and any feed back on the machine desighn or improvements that might be added.
    Last edited by Javaphile; 29th December 2012 at 03:26 PM. Reason: bad links

  2. #2
    Super Moderator Javaphile's Avatar
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    The links in your post were bad. Try posting them again or attach the pics directly to your post here.


    Java "Waiting for the cool pics" phile
    Toys! I must have new toys!!!

  3. #3
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    Quote Originally Posted by Javaphile View Post
    The links in your post were bad. Try posting them again or attach the pics directly to your post here.


    Java "Waiting for the cool pics" phile
    Dam I spent an hour trying to up load them ill try again later

  4. #4
    Super Moderator Javaphile's Avatar
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    To tide folks over until Primate uploads higher res pics here are some low res ones.


    Java "Enjoy!" phile
    Attached Images Attached Images
    Toys! I must have new toys!!!

  5. #5
    Super Moderator Javaphile's Avatar
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    The next batch:
    Attached Images Attached Images
    Toys! I must have new toys!!!

  6. #6
    Super Moderator Javaphile's Avatar
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    And the next batch:
    Attached Images Attached Images
    Toys! I must have new toys!!!

  7. #7
    Super Moderator Javaphile's Avatar
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    And the last ones.


    Java "Big brass!" phile
    Attached Images Attached Images
    Toys! I must have new toys!!!

  8. #8
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    A work of art is a joy forever. Seems a pity to sully it by actually roasting beans in it.

    Amanda
    bcspark and Pretzal like this.

  9. #9
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    Re: My hand built coffee roaster ( lots of photos )

    Wow, what an some machine / art. Great work!

  10. #10
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    Thanks heaps javaphile
    I'm good at designing and building things not so crash hot with the general computer stuff

  11. #11
    Senior Member coffeechris's Avatar
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    Like the people above very nice looking roaster, Well done putting it together. Am i right by saying the heat comes from the rear of the roaster and not from under the roaster?

    How ever it works i must say its looks great

  12. #12
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    Quote Originally Posted by coffeechris View Post
    Like the people above very nice looking roaster, Well done putting it together. Am i right by saying the heat comes from the rear of the roaster and not from under the roaster?

    How ever it works i must say its looks great
    Yes it has an oven element and fan pushing the heat around

  13. #13
    Roz
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    That is a thing of beauty, love the design.

    Do you know the capacity of her yet?

  14. #14
    enjoy black coffee JamesM's Avatar
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    holy sh1t! Great workmanship, well done!

  15. #15
    Site Sponsor coffee_machinist's Avatar
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    Just a hunch, but I'm guessing mr Primate is also the name behind some damn fine custom steel bike frames, but regardless the craftsmanship and ingenuity on show here is just... wow. Please keep us informed about how this thing goes!

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    Quote Originally Posted by Roz View Post
    That is a thing of beauty, love the design.

    Do you know the capacity of her yet?
    Hey Roz not sure but my mate who started me on this whole project (he asked me to build him a roster and this is what I came up with his circumstances changed but I was already hooked so I built it any way thinks I should be able to do a 1Kg roast batches I'll have to play around and see .

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    Quote Originally Posted by coffee_machinist View Post
    Just a hunch, but I'm guessing mr Primate is also the name behind some damn fine custom steel bike frames, but regardless the craftsmanship and ingenuity on show here is just... wow. Please keep us informed about how this thing goes!
    You got me bro two big passions in my life bikes and coffee really what more can a brother ask for
    Caftek, JamesM and Jonty like this.

  18. #18
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    Looks great
    you asked for suggestions....
    do you have enough heat?
    bean temp probe positioning
    smoke extraction
    chaff collection
    cooling tray
    drum hole size v small beans?
    vanes in drum for agitation

  19. #19
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    Quote Originally Posted by beabeabeaner View Post
    Looks great
    you asked for suggestions....
    do you have enough heat?
    bean temp probe positioning
    smoke extraction
    chaff collection
    cooling tray
    drum hole size v small beans?
    vanes in drum for agitation
    Hey beabeabeaner
    well lets start at the top
    heat- I have an oven element same as is fitted in most fan forced ovens so up to 300 deg will be no issue.
    Bean temp probe - after talking to my mate on this I fitted a Swiss made oven thermometer in the front face of the roaster this is on the low side or the drum and about 5mm from the beans so I'm hoping this will give me a good reading . Then there is the thermostat probe for the actual oven element this also runs along side the drum so I'm hoping for good heat control in the drum . I'll have to see
    Smoke extraction - I'm lucky enough to have a 44' square work shop that was an old fish and chip shop so has a kick ass extractor and I have left three big 10mm smoke holes on the front face.
    Chaff collection - this may be an issue I am banking on the force of the fan witch is driving from the back forcing the chaff towards the door and I'll catch it when I open the drum but if this don't work I'll look at cutting a hole in the base of the drum and drawing the chaff out from there.
    Cooling- as the drum is independent of the roast chamber the idea is that the drum is drawn out still rotating I had at first planed to have a fan run cool air past the beans but I hav found that with the fan of the oven running it actualy draws cool air in and blows it over the beans but I'll have to experiment with this to see if it enough .
    Drum hole size - the mesh I used has a hole size of 3.5 mm I'm not sure how it will fair on the pea berry's
    but it is the same size mesh as the boys who are roasting on a big scale use so I'm hope full.
    Agitator blades- I Only finished fabricating and fitting the agitator blades 2 days ago and it was a shit of a job very fiddly but I have 6 offset curved blades running in diffrent directions so the beans will be getting plenty of movement.
    Well that covers it so far fingers x it works well other wise it could be a very expensive art piece
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  20. #20
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    Quote Originally Posted by Primate View Post
    Hey beabeabeaner
    well lets start at the top
    heat- I have an oven element same as is fitted in most fan forced ovens so up to 300 deg will be no issue.
    Bean temp probe - after talking to my mate on this I fitted a Swiss made oven thermometer in the front face of the roaster this is on the low side or the drum and about 5mm from the beans so I'm hoping this will give me a good reading . Then there is the thermostat probe for the actual oven element this also runs along side the drum so I'm hoping for good heat control in the drum . I'll have to see
    Smoke extraction - I'm lucky enough to have a 44' square work shop that was an old fish and chip shop so has a kick ass extractor and I have left three big 10mm smoke holes on the front face.
    Chaff collection - this may be an issue I am banking on the force of the fan witch is driving from the back forcing the chaff towards the door and I'll catch it when I open the drum but if this don't work I'll look at cutting a hole in the base of the drum and drawing the chaff out from there.
    Cooling- as the drum is independent of the roast chamber the idea is that the drum is drawn out still rotating I had at first planed to have a fan run cool air past the beans but I hav found that with the fan of the oven running it actualy draws cool air in and blows it over the beans but I'll have to experiment with this to see if it enough .
    Drum hole size - the mesh I used has a hole size of 3.5 mm I'm not sure how it will fair on the pea berry's
    but it is the same size mesh as the boys who are roasting on a big scale use so I'm hope full.
    Agitator blades- I Only finished fabricating and fitting the agitator blades 2 days ago and it was a shit of a job very fiddly but I have 6 offset curved blades running in diffrent directions so the beans will be getting plenty of movement.
    Well that covers it so far fingers x it works well other wise it could be a very expensive art piece
    Good work, sounds like a functional art piece.

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    A thing of beauty. If only I had a tenth of your talent! Have you considered replacing the oven thermometer with a thermocouple from beanbay? It would certainly make your first roasts a little less likely to end up as charcoal so should be money well spent.

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    A work of art. I to love building technical equipment that you could
    probab
    ly in all honesty buy for less, but its not the same as the thrill you get from saying, " I did that"
    Last edited by oldman; 30th December 2012 at 10:33 PM. Reason: spelling

  23. #23
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    Quote Originally Posted by habahabanero View Post
    A thing of beauty. If only I had a tenth of your talent! Have you considered replacing the oven thermometer with a thermocouple from beanbay? It would certainly make your first roasts a little less likely to end up as charcoal so should be money well spent.
    Sounds like a worth while investment I'll look into it thanks

  24. #24
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    A very impressive piece of engineering

  25. #25
    Senior Member C-man's Avatar
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    looks unreal!

    so how did it go?

  26. #26
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    WOW! awesome job. Puts my new little roaster to shame, hehe

  27. #27
    Senior Member greenman's Avatar
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    Re: My hand built coffee roaster ( lots of photos )

    brilliant effort Coffeesnobbers never cease to amaze me

  28. #28
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    Looks really nice and solid. Lovely job.

    One thing I can't work out from the pictures how do you eject the beans for cooling?

    GrahamK

  29. #29
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    So Primate ..... is that Bike Frames as in - Motorcycle ? or Bicycle Frames?
    Fine work just the same.
    Proves the point - ART is not just an ...expression of emotion ...that hangs on walls!

    EA

  30. #30
    Senior Member matth3wh's Avatar
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    My hand built coffee roaster ( lots of photos )

    Amazing stuff. How did the first roast go?

  31. #31
    Senior Member saoye's Avatar
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    Looks fantastic! Need to show us the heat control and bean dumping/cooling method...but regardless it's puuurty! Speaking of which I might need you to help customise my sporty

  32. #32
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    That is gorgeous!

  33. #33
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    Hey out there well let me respond to the bean ejection first , the drum rotates on its shaft and the whole rotating drum tracks on the SS rods going into or out of the roast oven, one of the harder parts to work out was how I was going to fabricat the hinge door for the drum, after playing with a lot of diffrent ideas I decided to just make a removable flap so one 1/4 panel removes completely and ( it has 2 lip bolts on one side and 2 SS m4 bolts to lock it down on the other) so the idea is after the roast is done the drum tracks out of the oven ( still rotating ) I have a fan pushing cool air thrue the drum as it cools , when it's cool enough to touch about 1 min I stop the motor remove the cover plate put a catch tray under the drum then switch her on and the beans come spilling out pretty easy
    as for my first roasts well I did 2x250g batches the first batch was from the drum Beeing cold got first crack at 16min and stopped the roast at 20min this one came out a bit light .
    2nd roast was with a hot drum first crack at 13min and stopped roast at 18min she just started second crack roast was a touch dark .
    All in all she performed very well there are a couple of things I'll be looking at improving 1st the drum being a big mass of brass holds a lot of heat so I think I'll be putting some insulating cloth around the control unit and cables in the back and I will be looking at making the view portal an opening unit as it got pretty fogged up and made it hard to time the cook. And adding a thermocouple to get a better idea of the internal temp . I have some shots of my first attempts but I can't for the life of me up load the shots from my phone if your keen you can check them out on my face book page

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    [QUOTE=EspressoAdventurer;488009]So Primate ..... is that Bike Frames as in - Motorcycle ? or Bicycle Frames?
    Fine work just the same.
    Proves the point - ART is not just an ...expression of emotion ...that hangs on walls!

    ]Hey espresso adventurer I build bespoke steel bicycle frames

  35. #35
    Senior Member matth3wh's Avatar
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    My hand built coffee roaster ( lots of photos )

    Sounds like you're having fun with all of this which is good.

    Some good test roasts under way and your appetite is whetted for some tweaking. They say a picture paints a thousand words. Have you taken any more ? ;-)

  36. #36
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    Well I got to try the beans I roasted on the weekend this morn.
    The light batch was very bright and sharp on the Palet (I was about to bin it but my better half proclaimed she liked it ?)
    next I pulled a shot of the darker roast and this one was a lot better a nice Rich chocolate flavor with what my Bette half described as over tones of ginger and nuts looking foward to playing some more soon .
    matth3wh likes this.

  37. #37
    Member themurphs's Avatar
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    I am in awe!

    Great job.

    With the peaberry, my roaster has 4mm perforated stainless holes and seems to hold them in fine.
    one or two wedge themselves in the holes, but no big deal.

  38. #38
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    Just wondering how the roasting is going? This is such a thing of beauty...

  39. #39
    Senior Member Pavoniboy's Avatar
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    That's incredible! From the title I was imagining something like a bodgy drum over a BBQ, or similar (imagining it on my capabilities basically - which would be a bodgy drum over a BBQ). That is some serious craftmanship. Love to see craftmanship in this day and age.

  40. #40
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    My hand built coffee roaster ( lots of photos )

    Behmor Coffee Roaster
    Quote Originally Posted by JamesM View Post
    holy sh1t! Great workmanship, well done!
    I'm with James!!!!!! What a fine looking machine. Beautifully built.



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