That's awesome! I'm currently working on a similar build... may I ask which tool you used to bend the heatpipes? I got a "breakline bending tool" from eBay but the bending radius seems to be much bigger than yours.
You have a link to your build?
I used this one
Plumbers Copper Mini 3 in 1 Brake Pipe Bender 3 4.75 & 6mm Fluid Pipe Rod TE393
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I paid 5 or 6 euros for mine.