Thanks for clarifying Bowman. Ironically 'bows' (bowman) was my primary interest!

He must have sat there for quite a while with that heat gun!

The difference in the pipes is indeed wall thickness, and here in OZ we refer to it simply as ultra high pressure pipe. (UHP) we can get it in white, grey and orange.

There are many tribute YT vids to the bow maker, that go in to a ot more detail showing how to actually heat up, flatten and roll the PVC.

The smaller ones seem to have a lot more kick!!

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On the other structures, did you see the geodesic dome made to accomodate an army surplus parachute as a cover!! Awesome job.

I quite like the fact that with the vege gardens and green houses, the structure itself can be made to hold water, and have all the taps and fittings integrated within it. Makes for a very neat watering or recycling system.

One day I'll be on that page.... one day.... :)