Boiler "Upgrade" to Jetstream

[bnew63]

I've never cast a replacement nozzle, I believe hobbyheater has, but I had mine out cleaning ashes this morning and took a few measurements. I've been thinking I should probably try to make a plaster mold of it or something now while it's still in such good shape. It's a pretty complex shape so it's hard to explain the measurements, hopefully this can be some use to you.

The casting is 1.5 inches thick
The tunnel is 8.5 inches wide, 13.5 inches long
The 'shelf' is roughly 3.5 inches long, the main body is 9 inches long at the top and 8 at the bottom.
The Tunnel is 7 inches tall at the high part and 6 at the low end.
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thanks Graham
I didnt know that they are still available
I will take hobbyheaters advice and buy one then make a cast for the future