My website has some adjustments in pricing and a new item.
I’ll mention here that July’s prices do NOT apply to orders made prior to July 1 even though they aren’t delivered yet.
Mack
Mack
Happy 4th of July! Cool fireworks. 
Will you be offering the new “Blacktop” in sizes other than 1/2"?
I just got 3 whistles from Mack, a low E aluminum tube (with 2 fipples!), a B and C# Tunable with Brass Trim whistles.
I can finally play all of them, and with the two fipples, it’s like having 2 different low Es!
The only fault I could possibly find with any of them is that the low E whistle won’t overblow the “octave G” with either fipple, from the lower octave like I like to do on a lot of tunes. That is a very minor fault.
I am not financially involved, just a pleased customer.
They are very hard to lay down…
Thus far the Delrin “Blacktop” is limited for barrels as large as 5/8" but ABS (black Pipe) with a delrin plug is in the works.
If someone wants to try one of those it might hasten the R&D. It would have to be a complete whistle with a barrel sent to me or one of my own making.
Mack
I have 5 of Macks… Brass Narrow bore soprano D, Whitecap Brass tube soprano D, All Sterling Silver soprano D, CPVC Tunable with Brass Trim sorano D, and a CPVC Low D with extra G head.
Mack, I want to thank you for your help in getting me through my hospital stays…If it wasn’t for my narrow bore D, I would have gone crazy… 
Thanks my friend.