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Build your roaster with whatever you find...
kahveuno
I have finally build my first drum roaster at home. It is "special" because I aimed to build a roaster combining simple, ready build parts which can be found easily in the market or at home in the kitchen.
To give an idea, I have attached the pictures of the drum and the parts I have used to build it.
The drum is a "stainless steel perforated shelf", rounded as a cylinder.
The front cover and the back cover are the disassembled parts of a "stainless steel foldable steamer".
The front opening is a disassembled "tea filter basket".
The shaft connection to to the back cover is done by using the parts of a broken "french press".
kahveuno attached the following images:
img_7436s.jpg img_7438s.jpg cay-suzgeci.jpg img_7392s.jpg img_7395s.jpg img_7437s.jpg

https://twitter.com/#!/KahveUNO
 
kahveuno
Attached is the concept design and the picture of the semi-finished project. You can also watch the cold dry-run of the drum with the beans rotating inside in the following link:
[video]http://www.youtube.com/watch?v=0x4DrgBALl4[/video]
kahveuno attached the following image:
img_7417s.jpg

Edited by JackH on 10/07/2014 4:08 PM
https://twitter.com/#!/KahveUNO
 
kahveuno
Attached is the missing "concept design" picture from my previous post.
kahveuno attached the following image:
roastuno-conceptdesign.jpg

https://twitter.com/#!/KahveUNO
 
allenb
Hi Kahveuno, You've taken re-purposing of kitchen items in building a coffee roaster to a whole new level! This is a masterpiece! I'm looking forward to seeing the KavurUNO roasting coffee.

A couple of questions for you:

What are the front rollers made of and can they handle the heat?

Are you planning on enclosing the front to keep the heat contained?

Oh, I'm particularly impressed with your choice of drive shaft and especially since you kept the presspot ball handle intact. ThumbsUp

Allen
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
kahveuno

Quote

allenb wrote:

Hi Kahveuno, You've taken re-purposing of kitchen items in building a coffee roaster to a whole new level! This is a masterpiece! I'm looking forward to seeing the KavurUNO roasting coffee.

A couple of questions for you:

What are the front rollers made of and can they handle the heat?

Are you planning on enclosing the front to keep the heat contained?

Oh, I'm particularly impressed with your choice of drive shaft and especially since you kept the presspot ball handle intact. ThumbsUp

Allen


Thanks for the good comments Allenb.
The ideas in this forum encouraged me to build my own roaster much earlier than I expect :) Most of the design ideas, and nearly all of the technical information is coming from this forum.
And the answers to your questions:
1. The Rollers:
- To be honest, I have no real details about the rollers. They are sold as polyamid wheels, but I also had doubts about their performance when I first bought them. I had done a hot dry-run test with the roaster without coffee beans and checked their temperature. The good thing is that, they did not get very hot. There is significant air flow is towards inside through the front opening, and the side holes keep the walls of front opening cool. The wheels were "cool to touch" after 20 minutes of hot run. So I did not bother myself about the material.
2. The front cover:
- Yes, I have closed the front.
3. The First Roast!
- You can see a few pictures of my first roast.
For the first roast, I have chosen natural pulped Brazil beans on purpose, which produced lot of chaff.
kahveuno attached the following images:
dsc_0450s.jpg dsc_0447s.jpg dsc_0443s.jpg dsc_0442s.jpg dsc_0437s.jpg dsc_0420sc.jpg

https://twitter.com/#!/KahveUNO
 
kahveuno
KavurUNO roasting trials are in progress. I am trying different size batches and tweaking the process.
Sometimes everything does not go smooth as expected. I have spotted a small problem: Trapped and burnt beans inside the far end of the drum. I have performed 3 roasts and this situation happened in all of them. Since the drum is long, it can be a difficult task to remove the beans before each roast.
kahveuno attached the following image:
trappedbeans.jpg

https://twitter.com/#!/KahveUNO
 
kahveuno
Well, this is my open thanks to this forum, and a latest update about the finished project KavurUNO home-made roaster.
KavurUNO succesfully completed more than 30 roasts, and I am very happy with its performance.
Attached is the video of the final configuration with 3 thermometers, and the air ventilation system installed.
It costed me less than 200USD, which is a very good investment for a 250gr drum roaster. I will be happy to help forum members, if anyone is interested about the components and the details of the build process.

https://twitter.com/#!/KahveUNO
 
broeker
Awesome work!!! such a primo result :-)
 
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