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Forum Discussions => Have your say => Topic started by: BP on 18/02/2016, 09:56 PM

Title: Building a KKTO
Post by: BP on 18/02/2016, 09:56 PM
Hi there

It was suggested I start a new thread re, help building my own KKTO in Vietnam.

Just bought a 1300w turbo oven, highest wattage I could find here.  (KK did say 1400w)

Its a Japanese Sanaky, supposed to be top quality compared with the couple of Chinese models here. 

So the project has begun and I will be hunting around odd shops looking and gesticulating in my search for the gear needed.  My viet family can't understand why you'd by a cooking machine and throw half of it to one side.  ;) 

CF's been great to get me started.  I am sure I there'll be more questions soon enough.


Title: Re: Building a KKTO
Post by: Koffee Kosmo on 19/02/2016, 09:33 AM
Thinking about your location BP
If you can find a suitable lower pot be it stainless steel or cast iron

I am not sure if a Wok will work as the bottom pot
Suppose there could be a first time KKTO with an Asian flavour

You still need to measure the volume as normal

And yes I also had issues with family when designing the roaster

Title: Re: Building a KKTO
Post by: BP on 19/02/2016, 04:01 PM

I read Brett H's suggested list of whats needed (thanks). 

One thing he said was a 7 lt stainless steel pot (and you say cast iron). 

Stainless steel pots can be bought here. 

Although lighter-gauge aluminium pots are most common.  As huge as you want for cooking Pho (soup) on the street.

--Are these lighter pots more unstable for heating evenly and heat retention?  (I see people use a heat insulating material with their KKTO)

--Is a stainless steel pot with heavier base better with no need to use insulating material?

--Can I roast up to 1 kg a batch with this 7lt sized pot with my 1300w TO?



Title: Re: Building a KKTO
Post by: Brett H on 19/02/2016, 04:55 PM
Hi mate, the material of the pot matters less than the fact that you'll need insulation around it.  Fire blankets work well!  A 7 litre pot with a high-specd turbo oven or heat gun will roast 1kg but some batch-size variations may suit different beans!  Great thread mate!
Title: Re: Building a KKTO
Post by: mycuppa on 19/02/2016, 09:08 PM
Metallurgy as it applies to conductive thermal transfer during roasting is important but only if you know (and I mean really understand) whether the appliance you are using is actually using conductive or convective heat methods, or a combination of both.

Most roasters use a combination of mild steel and some cast components. Cast iron is largely overrated and over hyped by pretentious folks who seem to think that refurbished 50 year old roasters are the only platform that can make nice coffee. Which of course is crap.

Stainless is used by a small number of roaster builders and they also use it with other alloys in typical configurations of different inner and outer layers.

Aluminium-personally I would not go there.

Stainless is harder to get up to temp and slower to cool but is can offer some other benefits. Brambati are well known for using stainless and alloys to excellent effect.

Generally though mild steel is remarkably good as is cast and they have similar heat properties. Thermal mass is really about density and transfer efficiency. All 3 of my roasters have varying levels of cast And mild steel. Does it make much of a difference? No, because other things such and airflow and heat control are far more important than what the drum is made of and the faceplate thickness.

being able to heat and cool quickly are important elements of control especially during the execution of a roast batch. Thermal lag makes it difficult to respond to the sorts of split second responses you need when roasting.

Title: Re: Building a KKTO
Post by: BP on 23/02/2016, 09:35 PM
Hi there

Updating my KKTO building project, (hmmm I should say with help of KK and CF friends).

So have I bought a new 1300w Japanese TO, it's sitting in its box, waiting waiting waiting...... the easy part.

Today I tracked down an acrosteel pasta pot in Australia, on eBay.  Have to get that picked up and shipped to me by my son.  No internet shopping allowed here in Vietnam, except internally it seems. So my $29.95 pasta pot set is a complex purchase. (with the help of my son) 

But I have the end results in mind ha, ha.... the cracking sounds of fresh robusta beans grown nearby.

I am using the instructions on KK's google docs and keep looking at photo's posted here by KK for his most recent KKTO project build.  I was wondering what version I am actually building....?   First I thought the pasta pot meant no need for making a false base on the pot.

Now I realise, da!! I still have to cut the pot and glue in false bottom for the correct roasting dimensions.  There's never a short cut hey, (pardon the pun) only in my imagination.....  I have met a local guy here with a lathe so I will get him to make the cut when the time comes. 
I have a list of things needed and will buy some gear from KK after the pots arrive. 

It has been good starting this and feeling that these days I can take my time. 

This has been my motto here in Vietnam, (tu, tu, BP or slowly slowly).  We are opening a cafe bar later this year, at our home which is right smack bang on the beach.  We are lucky enough to be able to walk out of the house and onto the sand with the sea about 10-12 metres away.  I want to call the cafe, "Every day Sunday"  as this is my life now. :-).  But that is another story.

Check in again, tu, tu!



Title: Re: Building a KKTO
Post by: BP on 23/02/2016, 10:21 PM
Building my KKTO project updated.
Title: Re: Building a KKTO
Post by: Brett H on 23/02/2016, 10:22 PM
Wonderful stuff Mate!  Where are you in Vietnam?
Title: Re: Building a KKTO
Post by: Koffee Kosmo on 23/02/2016, 10:59 PM
When you purchase the drive parts you get a different set of build plans for the newer style twin pasta pot roaster
But you also need to refer to the step by step wood base roaster builds I have posted on this forum
( I'm sure you have probably seen this thread )
Title: Re: Building a KKTO
Post by: BP on 24/02/2016, 01:08 PM
Hi KK and BH

New set of plans with drive motor sounds excellent.  You can reserve one motor and drive linkages for me ahead of time, that'd be good, please.  Let me know when you have them back in stock kk.

Brett H, I bought a house near Nha Trang first built by an american guy 15 years ago.  About 25 mins north on the highway to Hanoi.  Nha Trang is a big tourist city, where we are is quiet, less populated on a calm beach.  It was a lucky find and we have just finished a huge reno on the place and have included a couple of rooms for a guest house option too.  The reno has turned out looking beautiful. But boy what a stress building it.

Title: Re: Building a KKTO
Post by: Brett H on 24/02/2016, 07:30 PM
I loved the fresh seafood in Nha Trang and the cable-car too was a memorable highlight.  That said my favorite part of Vietnam was the Old Quarter in Hanoi... Orgainised chaos and every direction proved to be a fascinating and rich tapestry.