I have just started making nickel plated copper whistles with Delrin fipple plugs. I am very happy with the sound- very mellow, almost forlorn.
Check obrienwhistles.com for pictures. I hope to have sound files on there soon.
As an introductory offer, to find out what other people think of these whistles, I am making a special offer to C and F readers. I am making six available at half price ($32.50, Canadian, including shipping) to the first six who PM me.
Be the first on your block to own a Delrin fipple O’Brien!