The Copley & Boegli delrin flute is my favourite travel waterproof flute too. The intonation is very good although the third octave sounds flat (not many people here go there I suppose) I need to play more with the adjustable head cork which I keep forgetting is adjustable.
It’s a shame Glen Le Bot’s resin flutes don’t get much exposure here for his keyed flutes. The Boosey & Hawkes ebonite keyed flutes and the Rudall Carte Rockstro in ebonite still sound outstanding. They sound so good compared to the contemporary flutes albeit not ideal for camping.
The ebonite is discontinued due to its carcinogenic potential. I guess that’s why silver lip plates are handy.
He made a post of Facebook maybe a month ago updating saying he was soon to stop taking orders for keyed flutes and has stopped bulk producing his folk flute, moving to a waiting list model for those. He’s still making his standard model flutes. He followed by saying he is “tooling up to 3D print” his flutes and says he’s had some good success with his prototyping. He also will be starting up (and hopefully documenting!) his glass flute project again.
I have had a Terry McGee Delrin flute since August 2023. I think about lots of things when I pick it up - such as “how am I going to hit that sweet spot” which I managed to hit for 20 minutes out of 60 minutes playing the day before - I have never once thought about the weight of the thing. If I pick up a whistle I tend to immediately notice if it’s light or heavy. It must follow that the weight of the McGee Delrin flute is just right - at least for me.
You’ll be in for a surprise - congratulations - I think it’s outstanding and have held onto mine after all these years. Really happy with mine. I was out with some friends and cajoled a player to play something on it. Here’s my Copley & Boegli in his hands if you want to hear a sample: https://www.youtube.com/watch?v=pc34Qxv576s
Feedback: he said it felt very intuitive and friendly and incredibly easy ergonomically. The embouchure is ‘megahuge’ compared to what he’s used to. Very reedy warbly warm floating pitch with attack and responsive. Downsides - he noticed it was very easy to bend notes (intentionally/unintentionally by almost a semi-tone) and it drew a lot of air.