Building a Keg based reflux still using the bokakob design, with some modifications courtesy of the distilling community.

Before you start check the laws in your local area, some places you cant even own a still let alone use it to make a drinkable product, check it out first. I know in New Zealand you can make your own booze and in the UK you can have a still that makes up to 5L if you have a permit.

I wanted to have a go at making my own spirits, Rum, spiced rum, vodka, schnapps whatever took my fancy really and to do this I knew I needed a still, now there is very cheap and easy to make stills out there, you can connect a copper coil to a stockpot and put the coil in water and off you go, this is known as a Pot Still, a very crude one but it will work, just not very efficiently.

I wanted to get the best out of my still, plus I like the challenge or building something new and something that looks cool, and it's nice to say "I own a still"

the following instructable comes from weeks of research in to making stills, running them and making actual drink able products.

I have attached an image of the original Bokakob still design, but in summary it's a large copper pipe with 2 plates near the top at a 30 degree angle with a copper condenser coil at the top which water runs through to cool the valorised alcohol which then drips down hits the plates and then it can be collected.

for those that don't know what a reflux still does, basically it allows the alcohol to be re circulated around the column each time it drips back down the center it picks up more alcohol from the vapour which means you get a much purer product that from a pot still. having said that sometimes you need a pot still to keep the flavour of what you produce, the Bokakob design allows you to run it both as a reflux still and a pot still.

during my research I found this animation of the bokakob design working, check it out.

http://www.screencast.com/t/ODMxYThm

also there is a ton of information out there on this still design, but you have to take it all with a pinch of salt and work out what is good or not.

with this still we should be able to produce around 90% pure alcohol if not more, about 3 litres from a 20L fermented mix, also known as WASH or MASH, the wash should be around 14% alcohol by the time its finished fermenting, more if you use turbo yeast, it really depends on the recipe.

you can get so much information from the home distillers website, they have some great recipes and information on their site and on their forum.

http://homedistiller.org

if you need more information on the bokakob still design check this wiki out

http://wiki.homedistiller.org/Boka_Reflux_Still_-_How_To_Build

Passo 1: Tools and Materials

OK so here is your list of materials, I will be following what most of the guys in the distilling community recommend which is a 2 inch column, here in the UK that is 54mm, and its expensive to buy so I didn't want to make too big a column.

you should use as much copper as possible, as the copper removes a lot of the impurity's from the alcohol as its produced.

Tools
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Hack Saw

drill

6mm drill bit

Blow torch

heat mat for soldering copper

a metal file

spanners and grips

Gloves (very important)

hammer

tape measure / ruler

6mm pipe bending spring

15mm copper/steel pipe to wind condenser coil around.

32mm PVC pipe for winding the coil around.

Materials for the still
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Lead free Solder

Flux for pipe work

54mm (2 inch) length of copper pipe, I bought might at a small local independent plumbing store, 1 meter long cost me about £24

54mm copper end cap, got at the same place I got the pipe from, cost about £12

6mm copper pipe, 7.5 meters from eBay cost me £18.99, plumbing shops doing tend to stock this, but you might be able to get it from car part suppliers as they use it for brake linings.

6mm needle valve, got this on eBay too for £11.99 which i thought was expensive

a few small pieces of scrap copper pipe to make plates out of

hose tap connector

food thermometer

copper scourers, make sure they are copper and not copper plated otherwise they will rust inside the still, check them with a magnet if you have to. you can use stainless steel scourers in a pinch, but the more copper you use the better. I got mine at a pound store, the local supermarkets didn't stock them and they turned out to be copper coated. so I gave up and used stainless steal I just ran boiling water over them in the sink to get rid of the oils.

a stainless steel keg 50L, you must buy this legally

a 2 inch tri-clamp also known as a tri clover clamp



Equipment For Making the Spirits and Fermenting
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Fermentation Vessel, I'm using a 25L tub bought from a local store

Hydrometer

Test flask

Alcoholmeter, make sure it's one for sprits

Wine Siphon

18 inch plastic spoon

Airlock valve and rubber bungs

materials for cleaning the still
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5kg sugar

Baker's yeast

water

yeast nutrient

sterilising compound

vinegar

dish soap

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NOTE:  making alcohol is dangerous and can cause serious side effects, you should read up on whats safe and not safe at www.homedistiller.org
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