HEATING THE WORKSHOP.
One perennial problem is keeping the workshop warm. Not just heat whilst one is working, but also providing sufficient background heat to prevent condensation and subsequent rust on everything.
Some years ago I made a very crude "solar heating system". It was "thrown together" out of junk, and to my surprise, worked
extremely well. It provided all the heat I required for most of the year, and even in the depths of winter, gave some background heat.
A neighbour was having a lot of building work done. Naturally(?) I looked in the builders skip and couldn't resist the temptation when I found it full of "things-that-might-be-useful" (better known as junk).
For others who may wish to follow the same route, this is what I did.
Find the largest window frame (complete with glass) that matches in size the biggest radiator you can find.
Make a box to fit the radiator with the window on the front, and lined with loft insulation. Mount this at about 45 degree angle facing south. Run the two pipes into the workshop, and connect them to another, smaller radiator. Try and position the pipes so that they are as short as possible and they have a reasonably level flow and avoid bends as much as possible. Obviously, the pipe coming from the top of the outside radiator, will be the hot end,, and should run direct to the inside radiator. In the other pipe, mount a normal central heating pump, and also another pipe, fitted vertically outside, to form a "header tank". Of course, you could be more "scientific" and use a proper tank, but I found that a length of 3/4" pipe around 10 ft long was sufficient to ensure that the system remained full of water.
(I soldered a wire mesh covered metal funnel to the top, and periodically used to fill it by judicious aiming of the
The outside radiator should be painted matt black, although it will still work if left in its original (probably white)
The pump was too powerful and needed the flow and or, the speed and / or time-on reduced.
I added a thinner piece of pipe to reduce the flow, and also ran the pump form an old transformer that was to hand, to cut its speed.
None of it was scientific, but it worked and gave me free heating.