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Step 4The Condenser
When the alcohol boils off, it will be a vapour. You can't drink vapour. You need to cool it so that it condenses into a liquid.
This is probably the easiest part to obtain, as coils of small-diameter copper tubing can be purchased from many DIY stores (sometimes called microbore, it is the 8-10mm tubing used to connect up modern central heating systems).
Cut off a convenient length, and insert one end into a hole drilled into the side of the column at the top, preferably level with the bulb or sensor of your thermometer. Seal it in place (epoxy again), and set the other end low down - the alcoholic vapours will cool, condense and trickle downhill into whatever receptacle you have chosen.
This is probably the easiest part to obtain, as coils of small-diameter copper tubing can be purchased from many DIY stores (sometimes called microbore, it is the 8-10mm tubing used to connect up modern central heating systems).
Cut off a convenient length, and insert one end into a hole drilled into the side of the column at the top, preferably level with the bulb or sensor of your thermometer. Seal it in place (epoxy again), and set the other end low down - the alcoholic vapours will cool, condense and trickle downhill into whatever receptacle you have chosen.
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