I set out to see how cheaply I could brew All-Grain. All I wanted to make at a time is 5 Gal batch, and some high grav beers would be a squeeze (although the 1.072 oatmeal stout i tried was fine!)
Its a complete plastic/electric build, and cost me under £100 to build.
3 x 33L fermentation bins.
4 x Kettles from tesco
4 x IEC adapters
1 x Roll of thermawrap
3 x ball valve taps
Length of copper for IC
assorted clips and tank connectors.
I took the elements from the kettles, and put two in the bottom of one bucket for the BK, and the same to another bucket for the HLT. I boil ALL my water first due to my hard water, and a full 33l bucket straight from the outside tap, which is probably around 13'C at the moment takes 45mins avg to bring to boil.
The third bucket is wrapped in layers of therma wrap, and used as the mashtun, I lose at most 1degree over a 60min mash. I have an old plate with holes as a false bottom.
Each bucket has a brass tank connector, with a dip tube on the inside of the bucket, and a ball valve tap, with a brass elbow and siphon tube on each.
The IC is 10m of 10mm copper pipe, and it was bent around a paintpot, and as my outside tap water is so cold, it cools very well!
The elements are very very simple to take from the kettle, and put into the buckets. Just disassemble the kettle, cut the size hole in the bucket, and re-assemble the elements around the buckets hole. The IEC adapters are for the kettles lead to be attatched to. I followed a very good guide that I've lost atm, but it was very helpfull.
Anyway, just thought I would share how I have my working, but very crude, All-Grain system. Its not the prettiest, but it gets the job done, and it was the easy and cheap!
However! The £100 mark includes, MLT, HLT, BK, and IC. I also had a bunch of fermenter, thermometers, hydrometer, and other bits and pieces from my cider making.
Also, as you would have guessed from the very first bit, I'm in the UK, so thats why using gas here would of been a much more expensive and not so easy way to go!