My second aluminium whistle came today, & I'm getting used to their sound a bit more now, & beginning to really like them.
So far, a Dixon Duo in 'C', & my Dixon in 'A'.
(Plus, I'm awaiting my Shearwater in low 'F').
My Duo just came this morning. 
First impressions :-
Whistle nice tone & fairly easy second octave.
With the flute head, breathy, (but could just be me, as I'm still finding my embouchure for flutes).
The Duo is an aluminium body with two heads in ABS plastic, one is a whistle, the other is a flute, & yes, tunable.
( URL=DX206 PICCOLO/ WHISTLE DUO )
I have been playing my various whistles these past few days, & I have come to the conclusion that I prefer whistles lower than the high D - & so I have just ordered up a Tony Dixon Duo in C to join the 'collection', & will see how I get on with it as a flute too. 
A Tony Dixon Duo in C to join the 'collection' too, (just ordered).
I'm liking my low whistles best.
Recently, I added a Tony Dixon tunable aluminium in 'A' to my collection, which has a nice tone, but plays a bit loud for my taste.
A Howard tunable low 'D' joined a week or so ago, powder coated brass, really nice tone & fairly easy to play, once having got the hang of the 'pipers grip'.
And, I have just ordered a Shearwater low 'F' aluminium, which sounds much like the Howard, tone wise, from videos I've listened to, but I'll have to wait a couple of weeks to find out for myself.
I didn't actually make any New Year Resolutions..............as they usually get broken...........& this year would have been no different!
Shearwater Low F on order. 
I came across this video, (a recommendation on another forum).
My sister recognised my playing of Edelweiss, (on my new low D whistle)...........I must be getting better! 
It just arrived, & I could hardly wait to get it out of its box.........it has a lovely tone.
(Can't find anything wrong with it to class it as a 'B' stock item.)
I came across these tutorials that may be of interest.
....& now, owing to a thread 'on another forum', I will soon be having a Low 'D' Howard joining the 'collection'.
As I found out that they sell 'B' stock at considerably less - so whilst it may not be perfect to look at, it should still sound & play perfectly.
(... & I don't really play anything much higher than my 'A' whistles now that I have them, truth be known.)
P.S. As it isn't the New Year yet, no resolution has been broken. 
That way works fine, thanks, Norman, & I also find that covering up half of the aperture with electrical tape works well too.
Well, aparently, I have 3x Tony Dixon, (2x alto 'A', 1x alto 'G'), 3x Clarkes, (2x 'C', 1x 'D'), a Feadog 'D', a Waltons 'D', a Dixon ABS 'D', plus 14x various Generations.............................................how'm I doin'.........
Merry Xmas, all.
Thanks for the photo of doing it that way, Norman, I'll give that a go.
No, no luck with Dixons, they replaced it with the aluminium model some time ago.
(I just thought it might have made a good/quieter practice 'A' whistle - not to worry.)
Have emailed - will wait & see what they say.
I haven't actually looked for an ABS in 'A' - just thought that I would likely be tempted to acquire one, if there was one available, but I don't think Tony Dixon does one in 'A', there isn't any on his website.
(There is a very nice aluminium 'duo' - I could be tempted to get one of those in 'C' - just for the times that I don't have the energy to hold up an 'A' whistle.)
Those little ABS Dixons are nice - if they made one in 'A', I'd likely buy it too.
I could be changing my mind........my new aluminium whistle is a very nice whistle. 
Hole spacing on both my TD 'A' whistles exactly the same, length differs just slightly shorter at the fipple end by about a quarter of an inch, owing to the wider bore of the aluminium tubing used.
(Must be nice to have someone to share & play along with at home.)
My new whistle arrived this morning.
It's quite a bit heavier & bulkier than my Trad A, with a slightly different tone - but I like it.
(Tony Dixon DX107 aluminium in 'A'.)
Todays 'positive' - was me getting through about 8 tunes without too many mistakes - must do it more often.
........& there was me thinking I might be 'cheating'........
(Because I have most of my other instruments in the key of C, & most of my collection of music also.)
I can see I'm confusing you all........ 
What I mean is that I will be playing in the key of C, mentally, but the tune will be played in the key of the whistle.
If I use a key of A whistle, where the notation shows a C note, I will finger it as a C note on a key of C whistle, but it will actually be played as an A note, key of A.
Likewise, if I use a key of D whistle, & I play a C note, mentally, but the whistle actually plays a D note - transposing from C to D, etc.
If I try to play in the key of the whistles, I would have to transpose for each different key, therefore I intend to play them as if they were all C instruments.
(Kind of like playing whistle tab on a different keyed whistle.)
Hi, Chris, by that, I just mean playing each & everyone of my whistles as if it were in the key of C - obviously they will actually play the tune in the key of the whistle - but my brain won't have to translate the written C notation to the key of the whistle.
I just came across this video on some techniques, it may be of interest to the rest of you.
I've decided to concentrate my efforts on a number of tunes that I like to play, or want to be able to play, going forward.
Presently, as it's nearly Xmas - Jingle bells & Silent Night.
Others - Skye Boat Song - Westering Home - Loch Lomond - Banks of the Ohio - Scarborough Fair - Edelweiss - House of the Rising Sun
Plus - Old Man River - Moon River
They should keep me busy for a while.
Being a newbie, I'm still searching for my favourite, but presently, it's brass.
I have brass & nickel Generations, a brass Feadog, an aluminium Waltons, brass Dixons, & an ABS Dixon.
(Soon I'll have an aluminium Dixon to try out too.)
So, what is your best/preferred whistle made of?
So, having purchased a number of whistles recently, I was thinking that, maybe, I should make a resolution not to purchase any more........... 
I have a number of Fake Books whose tunes are generally in the key of C.
So I have decided to play all my whistles in the C fingering style, (should only take a little bit of time to retrain my brain), but by doing so it will make things easier swapping between my various instruments.
I have no intention to play along with sessions, or anything of that nature, just play for my own enjoyment - & that's probably a good thing, because I don't suppose anyone else likes my playing anyway.
There appears to be some whistle tab here - https://www.google.com/search?q=whistle+tab&client=firefox-b-ab&tbm=isch&tbo=u&source=univ&sa=X&ved=2ahUKEwigxqiMzIvfAhXvVBUIHTXqCmEQsAR6BAgGEAE&biw=1368&bih=625
(Else, just search for whistle tab on Google or your favourite search engine.)
I totally agree, my music making is just for my own enjoyment, & I can get a tune out of most of my instruments, but, of course, some better than others.
I also know it was said in good faith. I do agree to a certain extent, that I'm better off getting to know one instrument well, & I know that that instrument is the chromatic harmonica for me.
(At this time of year, with the colder weather, our breath condensates on the windsavers, therefore sticking the two parts together, causing notes to not sound, so we need to keep them, our chromatic harmonicas, warmed up to about body temperature)
But I like other instruments too, latest fascination being the whistle, & as I used to play recorders, it isn't too much of a learning curve for me, (just need to get more proficient with half holeing).
On one of my other forums, I've been told I should concentrate on just one instrument - until I'm proficient - not sure that I can do that, but my harmonicas do take first priority. 
(I just found out the other day, that reptile heating mats are good for warming up my chromatics, so I went online to order one to try out.)
Should be easy enough, or Jingle Bells.
I like Silent Night, you can put some 'feeling' into it, sort of like Amazing Grace, where you can play it slightly differently, slowly or little faster.
I guess it's about time to dig out the Xmas tunes - not really a fan, but you have to, don't you
I don't have a problem with that, in fact my TD in A has it slightly already, & so far, I don't get an overly strong smell on my fingers, maybe I'm just not playing them for long enough. 
No, not much if any, they're both brass, just with an electro plated coating.
But, I think I prefer the brass look more now, having got my Tony Dixon Trads.
...added to my 'collection'.....
Brass Generations in Eb, F, & G - to keep my nickel ones company. 
