Bokakob 2" slanted plate (mini-still) column

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Pikluk
Swill Maker
Posts: 332
Joined: Sun Nov 04, 2007 8:22 pm

Bokakob 2" slanted plate (mini-still) column

Post by Pikluk » Sun Jan 20, 2008 2:39 am

Edited thread. Original thread here. The original thread deals with more details about this design, and running it.

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This is the way I built my Bokabob slanted plate still.

Head

1/4" OD copper tube
copper plate (used a piece of the 2" pipe cut open lengthways on one side, and hammered flat)
2" copper pipe
2" copper threaded adapter male
1/4" inline brass needle valve

Used this template for the cuts. The file name says 1.5" but it includes a 2" template too.

I didn't follow the 1/4" between plates, I gave it more like 3/4".

Made the cuts with one blade on the saw then used sand paper folded with sand on both side, made a nice tight fit. Took me about 5 min with #180 paper, easier to solder like this.
DSCF001.jpg
DSCF004.jpg
DSCF0039.jpg
fullhead.jpg
Column

2" copper pipe
2" threaded copper adapter female
fullcolum.jpg
Condenser

2" copper test cap (lot cheaper then a regular one, not soldered on)
2x 1/4" 90°brass compression fitting
1/4" copper tube
3/8" copper tube
DSCF0043.jpg
Boiler Connection

2" copper end cap
8 x 6-32 stainless bolts/nuts
cardboard (no ink or gloss)

Didn't have the right tool so I made a bunch of little holes and finished with a Dremel.
DSCF0031.jpg
DSCF0027.jpg
DSCF0030.jpg

The head is 13.5" high, total column is 63.5". The coil is only 7", and from the column top to the bottom plate is 10", so I could have made the head a bit shorter.

If you are building a still like this start with the coil so you know how much space you need for it.

The packing is structured copper mesh from Home Distilling.

There is a siphoning problem on the take off line when the output (in reflux mode) goes above 500 ml/h. See original thread for more details.
Last edited by Pikluk on Sat Apr 05, 2008 11:26 am, edited 1 time in total.
The more you read the more you learn.
The more you learn the more you realize you don't know shit :)

Pikluk
Swill Maker
Posts: 332
Joined: Sun Nov 04, 2007 8:22 pm

Post by Pikluk » Tue Jan 22, 2008 3:20 pm

Some more stuff.

Used a piece of oak for a seal on the thermometer probe.
probeandsuport.jpg
Used a 5 gal bucket handle bent into a coil with a hook, and a chain bolted to the ceiling to support the column. (The lid on the boiler is not very strong and will not hold the weight of the column on its own.)
DSCF0052.jpg
The more you read the more you learn.
The more you learn the more you realize you don't know shit :)

Pikluk
Swill Maker
Posts: 332
Joined: Sun Nov 04, 2007 8:22 pm

Post by Pikluk » Mon Jan 28, 2008 6:15 am

Made a short column for stripping (low wines) runs and pot stilling, and a small Liebig condenser for the output line to cool the condensate.

2" copper pipe with 2" threaded female copper fitting for the column.

1/2" copper pipe
2' x 1/2" copper end caps
3/8" copper pipe
1/4" copper pipe

Drilled 1/4" hole in the end caps and 3/8" holes on the 1/2" pipe.
Was easy to make, took me like 15 min.
shortcolunmandliebig.jpg
The more you read the more you learn.
The more you learn the more you realize you don't know shit :)

Pikluk
Swill Maker
Posts: 332
Joined: Sun Nov 04, 2007 8:22 pm

Post by Pikluk » Mon Jan 28, 2008 11:11 pm

Learning to drive, I'm almost there. :)
almost.jpg
At 300ml/h from ~50% low wine with only 32" of packing in the 52" column.
The more you read the more you learn.
The more you learn the more you realize you don't know shit :)

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