I hope it's been worth the wait, but here it is. 2 1/2" o/d, flanges on this one are MS 'cos I wasn't making them out of stainless by hand (if you've never worked with it, it's nasty stuff!). The "production" version will have all laser cut stainless flanges and any bosses you want, anywhere you want them!
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£150 +p&p. Once we've enough interest, we can sort out deposits and get the ball rolling.
If anyone wants one with a non std flange you'll need to let me have a template so I can see if the flange I have made can be universal, otherwise I'm afraid it'll have to incur a cost.