I recently developed an interest in welding and so began looking for a welding project. With winter around the corner I began scanning Instructables for outdoor wood heater inspiration. Lots of great ideas and creative approaches. Many use gas cylinders which are a perfect size but has an element of risk. By chance I came across a dumped electric hot water unit, and even though a bit on the larger size, I thought why not.
Materials & Tools
1x expired electric water heater of any size.
1x 2M length of 100mm round tubing or equivalent for the flue
Reinforcement steal rod
Angle grinder with scourer pad and cut off discs
Step 1: Heater Strip Down
To be honest this step started out as a bit of fun but I was over it by the end. The dome top and bottom of the cylinder being the trickiest and therefore most time consuming. The body was relatively easy, just score a grid pattern around the circumference. The horizontal scores were about 30cm apart, the vertical score was the depth of my multi tool blade – about 5cm. Then basically shear the thing like a sheep. As you can see it came off pretty cleanly in rectangular blocks, created a huge mess in the shed, but cleaned up very well. Note that I actually left the bottom section on right up to Step 6, this allowed me to use a spirit level to mark out in the next step.