Solar hot water - New, bigger corflute collector

It's still a test, but I've started making my new, bigger corflute collector.

This time I'm using my new glue gun to make everything stick, and I'll be using two sheets of corflute glued on to the back of the collector as the insulation. By doing so I can make it a bit bigger than the first test, and make better use of my glass. I will glue the entire thing to the glass to give it some structure.

At the moment it's upright, full of water, and leaking all over my front steps.

It turns out making a solar hot water service involves an awful lot of water leaking out of stuff. In fact, generally speaking, I've noticed that a lot of my projects involve leaks.

This time I anticipated my poor craftsmanship, and held off on painting it until I had repaired the inevitable leaks. I've marked where the leaks are so it should be easy enough to fix them.

And I forgot to sand the surfaces so the glue would stick better. The hot glue gun glue sticks well to the corflute but does't seem to like the black hose. I suspect roughing up the surface a little will make it stick better.