I would be interested in giving it a try, even tho' the shaping is a little different. . I like that the metal parts are stainless.
Too bad they don't have instructions on the Turners Warehouse website ( with possibly helpful additional pics ).
The UK source (Taylors Mirfield it seems) is out of stock and they don't have instructions either. .
But I did find out that the brass tube is 11/32, so that's just a tad smaller than 3/8".