Originally posted by 2muchcoffeeman link=1151194076/15#23 date=1156480040
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Roaster drum builder?
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Re: Roaster drum builder?
Howzabout cutting a hole in the side and poking your heat gun through for extra grunt?
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Re: Roaster drum builder?
Funny that... I was just looking at small rotisserie ovens for those larger roasts - theres a factory outlet near me that has Breville ovens for $100.
However, a few questoins: will these little devices provide an adequate temp (what is it anyhow?) and control? and do you hear the cracks ok? And what about the smoke? Can you watch the process adequately?
The Breville oven has a dial that goes to a mark beyond the indicated 240* - 250, i suppose - but how close/accurate would that be? :-?
As Im a metal worker theres no problem making a drum. It seems like Chris is on the right track ie keeping one end open for easy bean dumping. I think Ill make one thats like two cones joined at the base (fatter in the middle... (like <>
Im also figuring i could use the oven to make the odd toasted sanga - hmmm coffee smoked ham sandwiches anyone? ;D
I guess i could just buy one and experiment w it, but a hundred bucks buys a lot of beans!
pete
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Re: Roaster drum builder?
Andy- Im at 500g though I think the drum would easily do at least 800g....The issue is heating grunt....What to do....change elements or go gas??
Chris
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Re: Roaster drum builder?
Hey hey, thats looking great Chris.
I look forward to seeing what the V2 opening comes-up like, I think the easier it is to get the bean out, the less chance of getting burnt while unloading and reloading the roaster.
What sort of volume are roasting in it currently?
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Re: Roaster drum builder?
Not too bad, Brett....
Its just a slide off end-cap...
I think V2 will have solid stainless angled end sections and angled internal fins to direct the beans towards the back slightly..during rotation....I could probably then leave the end of the drum open....I see a 2 cm "edge" at the open end and just a support for the rotisserie rod. You could just give the whole lot a shake to empty the beans into the cooler then and say goodbye to any trickiness....
Chris
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Re: Roaster drum builder?
Chris,
How easy/hard is it to remove the end cap off whilst hot?
My drum has a slide, not too bad - but can be a bit fiddly when hot.
The RK drums seem to have a folding panel held in place by a pin during roasting.
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Re: Roaster drum builder?
And the outcome after a run in an Andy style cooling bucket & fan (from a pre-roast blend) looks like this:
So far, it seems like a good solution to larger batches.... 8-)
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Re: Roaster drum builder?
Henry- the drum is just perforated stainless steel. I got a buddy who has a workshop in Melbourne to build it to a brief....
The end cap just slides over the end of the drum....
Version #2 will have a few minir refinements....
2mcm
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Re: Roaster drum builder?
Ive been looking around for material recently... What and possibly where are those metal sheets from? Also, how does the "lid" works?
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Re: Roaster drum builder?
Well- I found a buddy and have headed down the Andy route for my roaster....I have dubbed it "Roastenstein"
Initial stats are 500gm to 1st crack in around 17 min with 2nd a couple of minutes later....
Could easily do 800 or so gm with a bit more element grunt. Im happy with roast consistency but will have to wait a couple of days for the cup results...
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Re: Roaster drum builder?
I used a cylindrical file to smooth the drilled hols. I set my axis of rotation, off centre as per the Korean home roaster. using a BBQ spit attatchment on the BBQ I rotate the Alpen Blend chocolate tin at 8 RPM, once ive finish my latest batch of Peruvian gems Ill give my new gizmo a whirl, thermocouple seems to indicated an even temp, max 240degrees, I can reduse/increase the temp by 50 degrees within ten seconds. Chaff will probably be an issue although I will probably cut additional slits for the chaff to escape around the spit axle.
Ill post pics next week.
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Re: Roaster drum builder?
Then it must be Austenitic and not Martensitic Stainless, the latter is magnetic..Originally posted by beanmeupScotty link=1151194076/0#8 date=1152152617Did the magnet test on the s/steel trash cans and surprisingly it didnt stick = stainless.................
Drilling the holes would be time consuming but probably not as time consuming as chamfering the cut edges of the holes inside..
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Re: Roaster drum builder?
Mdub
I remember seeing a photo of roaster made from the gas cylinder thing from the back of a forklift. It was on a coffee plantation somewhere out of the way, so there probably werent many options.
The drum doesnt have to be perforated, so drilling holes isnt absolutely necessary but thats up to you. I am yet to find a commercial drum roaster that has a perforated drum... :-? Im sure there must be some out there, but of the Probat, Joper, Diedrich, Toper and Has Garanti roasters Ive looked at, all were solid drums. Ive seen a few sample roasters that were perforated.
When it comes to stainless steel, pretty much everything on my roaster is Stainless, including the drum but again, of all the commercial drums Ive ever seen, none were stainless. High carbon steel or cast iron (I think) seem to be popular choices. I was worried about rust so went with SS.
As for fiinding a drum, you can buy SS or plain old steel cut to length from pipe. Lots of diameter and thickness options available. From memory the section I bought was $54.
Good luck with your endeavours.
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