Tiny Cheap Fluid Bed Roaster by Tije & Jan

[@vex123]

Thanks for sharing. do you have any more info specifically on how you mounted the heating element?

[@palefire]

Thank you too! On the blogs there's more detailed info, like on kostverlorenvaart.blogspot.com/2016/08/tiny-cheap-fluid-bed-roaster-tijes.html

[@sotirigeorgas7281]

Hi guys are you using heat sink for SSR ?

[@palefire]

In my FZ94 roaster the three SSRs have their heat sinks and a fan cooling these. I think there is some heat sink in the smaller roasters too. Don’t have close up photos here.

[@abiaSWR]

The tube is a glass?

[@palefire]

as far as I know, It's acrylate

[@abiaSWR]

Acrylic?!! does its not smell? Beacause its high temperature

[@palefire]

@@abiaSWR Tije emails me "sGlas. . ." which I interpret as short for "It is glass!" so it's possible that I was wrong on my assumption ;-)

[@palefire]

@@abiaSWR PS Jan adds that, more specifically, it is borosilicate.

[@whoami724y]

does first crack usually happen faster in hot air roaster when compared to traditional drum roaster?

[@palefire]

Yes in my experience roasts mostly take less time in fluid bed / air roasters but of course it’s possible to roast a loooong profile in an air roaster and roast lightning fast in a glowing hot pre heated drum. A good tasting successful roast usually takes less time in air than in drum, though.

[@whoami724y]

@@palefire hmm interesting, does it affect in terms of taste because the first crack happens quicker? i've heard if a first crack happens too quickly (for a drum roaster) it could taste grassy.. also does your air roaster use an extra fan to help agitate the beans or purely use the air from the heat gun? Edit: what maximum heat does your heat source use? thanks

[@palefire]

@@whoami724y These videos are often illustration on my blog where you can find more detailed background information: kostverlorenvaart.blogspot.com/ . Also Rob Hoos wrote a booklet "Modulating the flavor profile of coffee" where he reports on many tests he did. On Page 34 he shows the best of the booklet, how in his experience shortening or widening the 3 phases of roasting affect the taste result.

[@palefire]

The heating element is used with a different blower / pump than it would have if it was a hair drier or paint stripper. "maximum heat" as you name it is difficult to quantify. An element of 2500W would work well in a small roaster. A big Sivetz air roaster / fluid bed used MUCH heavier elements, too heavy for average household electricity infrastructure.

[@whoami724y]

@@palefire yeah im sure now that roasting large batches (+500g) is impossible if use only from heating gun except for hybrid roasting method(drum+heat gun). i was thinking to create a hot air roaster that runs on hot air gun only from the bottom that acts as an air pump and heat source simultaneously, but after watching a couple of videos it seems that running purely on hot air gun won't do good because it's not strong enough to make the beans agitate and could damage the inner fan. i think its possible though through combining heat gun and some kind of air pump like leaf blower to help the air flow like using two end tube, but its probably going to be tricky without the right tools and the electricity bill will probably be high 😂. thanks for the reply, i'll check your blog out!

[@irwansaputra5686]

Im from indonesia I like it

[@michelevitarelli]

Where did you purchase this?

[@palefire]

Tije built it, so it was not purchased from a shop or manufacturer. If you wat to buy one, look at Fracino’s Roastilino.

[@MrNevs38]

Is there a tutorial for making this?

[@palefire]

All the info is on kostverlorenvaart.blogspot.nl/2016/08/tiny-cheap-fluid-bed-roaster-by-tije.html

[@MrNevs38]

Thanks!

[@Anarchsis]

As much as I love coffee and actually want roast my own to say I’ve done it, this is too involved.

[@palefire]

Yes, there are more basic ways to get a taste of roasting, like the Gene CBR 101 roaster. After a while, if the novelty wears off, this roaster can be easily sold without much loss.